<div id="docs-body">
 <div class="section">
  <div class="titlepage">
   <div>
    <div>
     <h4 class="title">
      <a name="mysql-cluster-option-tables">
      </a>
      25.4.2.5 NDB Cluster mysqld Option and Variable Reference
     </h4>
    </div>
   </div>
  </div>
  <p>
   The following list includes command-line options, system
        variables, and status variables applicable within
   <code class="literal">
    mysqld
   </code>
   when it is running as an SQL node in
        an NDB Cluster. For a reference to
   <span class="emphasis">
    <em>
     all
    </em>
   </span>
   command-line options, system variables, and status variables
        used with or relating to
   <a class="link" href="mysqld.html" title="6.3.1 mysqld — The MySQL Server">
    <span class="command">
     <strong>
      mysqld
     </strong>
    </span>
   </a>
   , see
   <a class="xref" href="server-option-variable-reference.html" title="7.1.4 Server Option, System Variable, and Status Variable Reference">
    Section 7.1.4, “Server Option, System Variable, and Status Variable Reference”
   </a>
   .
  </p>
  <div class="itemizedlist">
   <a name="mysql-cluster-mysqld-optvars-summary-list">
   </a>
   <ul class="itemizedlist" style="list-style-type: disc; ">
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="server-status-variables.html#statvar_Com_xxx">
        Com_show_ndb_status
       </a>
      </code>
      :
            Count of SHOW NDB STATUS statements.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Handler_discover">
        Handler_discover
       </a>
      </code>
      :
            Number of times that tables have been discovered.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-applier-allow-skip-epoch">
        ndb-applier-allow-skip-epoch
       </a>
      </code>
      :
            Lets replication applier skip epochs.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-batch-size">
        ndb-batch-size
       </a>
      </code>
      :
            Size (in bytes) to use for NDB transaction batches.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-blob-read-batch-bytes">
        ndb-blob-read-batch-bytes
       </a>
      </code>
      :
            Specifies size in bytes that large BLOB reads should be
            batched into. 0 = no limit.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-blob-write-batch-bytes">
        ndb-blob-write-batch-bytes
       </a>
      </code>
      :
            Specifies size in bytes that large BLOB writes should be
            batched into. 0 = no limit.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-cluster-connection-pool">
        ndb-cluster-connection-pool
       </a>
      </code>
      :
            Number of connections to cluster used by MySQL.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-cluster-connection-pool-nodeids">
        ndb-cluster-connection-pool-nodeids
       </a>
      </code>
      :
            Comma-separated list of node IDs for connections to cluster
            used by MySQL; number of nodes in list must match value set
            for --ndb-cluster-connection-pool.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-connectstring">
        ndb-connectstring
       </a>
      </code>
      :
            Address of NDB management server distributing configuration
            information for this cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-default-column-format">
        ndb-default-column-format
       </a>
      </code>
      :
            Use this value (FIXED or DYNAMIC) by default for
            COLUMN_FORMAT and ROW_FORMAT options when creating or adding
            table columns.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-deferred-constraints">
        ndb-deferred-constraints
       </a>
      </code>
      :
            Specifies that constraint checks on unique indexes (where
            these are supported) should be deferred until commit time.
            Not normally needed or used; for testing purposes only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-distribution">
        ndb-distribution
       </a>
      </code>
      :
            Default distribution for new tables in NDBCLUSTER (KEYHASH
            or LINHASH, default is KEYHASH).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-apply-status">
        ndb-log-apply-status
       </a>
      </code>
      :
            Cause MySQL server acting as replica to log
            mysql.ndb_apply_status updates received from its immediate
            source in its own binary log, using its own server ID.
            Effective only if server is started with --ndbcluster
            option.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-empty-epochs">
        ndb-log-empty-epochs
       </a>
      </code>
      :
            When enabled, causes epochs in which there were no changes
            to be written to ndb_apply_status and ndb_binlog_index
            tables, even when --log-slave-updates is enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-empty-update">
        ndb-log-empty-update
       </a>
      </code>
      :
            When enabled, causes updates that produced no changes to be
            written to ndb_apply_status and ndb_binlog_index tables,
            even when --log-slave-updates is enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-exclusive-reads">
        ndb-log-exclusive-reads
       </a>
      </code>
      :
            Log primary key reads with exclusive locks; allow conflict
            resolution based on read conflicts.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-fail-terminate">
        ndb-log-fail-terminate
       </a>
      </code>
      :
            Terminate mysqld process if complete logging of all found
            row events is not possible.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-orig">
        ndb-log-orig
       </a>
      </code>
      :
            Log originating server id and epoch in
            mysql.ndb_binlog_index table.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-transaction-dependency">
        ndb-log-transaction-dependency
       </a>
      </code>
      :
            Make binary log thread calculate transaction dependencies
            for every transaction it writes to binary log.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-transaction-id">
        ndb-log-transaction-id
       </a>
      </code>
      :
            Write NDB transaction IDs in binary log. Requires
            --log-bin-v1-events=OFF.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-update-minimal">
        ndb-log-update-minimal
       </a>
      </code>
      :
            Log updates in minimal format.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-updated-only">
        ndb-log-updated-only
       </a>
      </code>
      :
            Log updates only (ON) or complete rows (OFF).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-log-update-as-write">
        ndb-log-update-as-write
       </a>
      </code>
      :
            Toggles logging of updates on source between updates (OFF)
            and writes (ON).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-mgm-tls">
        ndb-mgm-tls
       </a>
      </code>
      :
            Whether TLS connection requirements are strict or relaxed.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-mgmd-host">
        ndb-mgmd-host
       </a>
      </code>
      :
            Set host (and port, if desired) for connecting to management
            server.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-nodeid">
        ndb-nodeid
       </a>
      </code>
      :
            NDB Cluster node ID for this MySQL server.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-optimized-node-selection">
        ndb-optimized-node-selection
       </a>
      </code>
      :
            Enable optimizations for selection of nodes for
            transactions. Enabled by default; use
            --skip-ndb-optimized-node-selection to disable.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-tls-search-path">
        ndb-tls-search-path
       </a>
      </code>
      :
            Directories to search for NDB TLS CAs and private keys.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-transid-mysql-connection-map">
        ndb-transid-mysql-connection-map
       </a>
      </code>
      :
            Enable or disable ndb_transid_mysql_connection_map plugin;
            that is, enable or disable INFORMATION_SCHEMA table having
            that name.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-wait-connected">
        ndb-wait-connected
       </a>
      </code>
      :
            Time (in seconds) for MySQL server to wait for connection to
            cluster management and data nodes before accepting MySQL
            client connections.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-wait-setup">
        ndb-wait-setup
       </a>
      </code>
      :
            Time (in seconds) for MySQL server to wait for NDB engine
            setup to complete.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-allow-copying-alter-table">
        ndb-allow-copying-alter-table
       </a>
      </code>
      :
            Set to OFF to keep ALTER TABLE from using copying operations
            on NDB tables.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_deferred_count">
        Ndb_api_adaptive_send_deferred_count
       </a>
      </code>
      :
            Number of adaptive send calls not actually sent by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_deferred_count_session">
        Ndb_api_adaptive_send_deferred_count_session
       </a>
      </code>
      :
            Number of adaptive send calls not actually sent in this
            client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_deferred_count_replica">
        Ndb_api_adaptive_send_deferred_count_replica
       </a>
      </code>
      :
            Number of adaptive send calls not actually sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_deferred_count_slave">
        Ndb_api_adaptive_send_deferred_count_slave
       </a>
      </code>
      :
            Number of adaptive send calls not actually sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_forced_count">
        Ndb_api_adaptive_send_forced_count
       </a>
      </code>
      :
            Number of adaptive sends with forced-send set sent by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_forced_count_session">
        Ndb_api_adaptive_send_forced_count_session
       </a>
      </code>
      :
            Number of adaptive sends with forced-send set in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_forced_count_replica">
        Ndb_api_adaptive_send_forced_count_replica
       </a>
      </code>
      :
            Number of adaptive sends with forced-send set sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_forced_count_slave">
        Ndb_api_adaptive_send_forced_count_slave
       </a>
      </code>
      :
            Number of adaptive sends with forced-send set sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_unforced_count">
        Ndb_api_adaptive_send_unforced_count
       </a>
      </code>
      :
            Number of adaptive sends without forced-send sent by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_unforced_count_session">
        Ndb_api_adaptive_send_unforced_count_session
       </a>
      </code>
      :
            Number of adaptive sends without forced-send in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_unforced_count_replica">
        Ndb_api_adaptive_send_unforced_count_replica
       </a>
      </code>
      :
            Number of adaptive sends without forced-send sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_adaptive_send_unforced_count_slave">
        Ndb_api_adaptive_send_unforced_count_slave
       </a>
      </code>
      :
            Number of adaptive sends without forced-send sent by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_received_count">
        Ndb_api_bytes_received_count
       </a>
      </code>
      :
            Quantity of data (in bytes) received from data nodes by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_received_count_session">
        Ndb_api_bytes_received_count_session
       </a>
      </code>
      :
            Quantity of data (in bytes) received from data nodes in this
            client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_received_count_replica">
        Ndb_api_bytes_received_count_replica
       </a>
      </code>
      :
            Quantity of data (in bytes) received from data nodes by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_received_count_slave">
        Ndb_api_bytes_received_count_slave
       </a>
      </code>
      :
            Quantity of data (in bytes) received from data nodes by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_sent_count">
        Ndb_api_bytes_sent_count
       </a>
      </code>
      :
            Quantity of data (in bytes) sent to data nodes by this MySQL
            Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_sent_count_session">
        Ndb_api_bytes_sent_count_session
       </a>
      </code>
      :
            Quantity of data (in bytes) sent to data nodes in this
            client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_sent_count_replica">
        Ndb_api_bytes_sent_count_replica
       </a>
      </code>
      :
            Qunatity of data (in bytes) sent to data nodes by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_bytes_sent_count_slave">
        Ndb_api_bytes_sent_count_slave
       </a>
      </code>
      :
            Qunatity of data (in bytes) sent to data nodes by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_bytes_count">
        Ndb_api_event_bytes_count
       </a>
      </code>
      :
            Number of bytes of events received by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_bytes_count_injector">
        Ndb_api_event_bytes_count_injector
       </a>
      </code>
      :
            Number of bytes of event data received by NDB binary log
            injector thread.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_data_count">
        Ndb_api_event_data_count
       </a>
      </code>
      :
            Number of row change events received by this MySQL Server
            (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_data_count_injector">
        Ndb_api_event_data_count_injector
       </a>
      </code>
      :
            Number of row change events received by NDB binary log
            injector thread.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_nondata_count">
        Ndb_api_event_nondata_count
       </a>
      </code>
      :
            Number of events received, other than row change events, by
            this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_event_nondata_count_injector">
        Ndb_api_event_nondata_count_injector
       </a>
      </code>
      :
            Number of events received, other than row change events, by
            NDB binary log injector thread.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pk_op_count">
        Ndb_api_pk_op_count
       </a>
      </code>
      :
            Number of operations based on or using primary keys by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pk_op_count_session">
        Ndb_api_pk_op_count_session
       </a>
      </code>
      :
            Number of operations based on or using primary keys in this
            client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pk_op_count_replica">
        Ndb_api_pk_op_count_replica
       </a>
      </code>
      :
            Number of operations based on or using primary keys by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pk_op_count_slave">
        Ndb_api_pk_op_count_slave
       </a>
      </code>
      :
            Number of operations based on or using primary keys by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pruned_scan_count">
        Ndb_api_pruned_scan_count
       </a>
      </code>
      :
            Number of scans that have been pruned to one partition by
            this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pruned_scan_count_session">
        Ndb_api_pruned_scan_count_session
       </a>
      </code>
      :
            Number of scans that have been pruned to one partition in
            this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pruned_scan_count_replica">
        Ndb_api_pruned_scan_count_replica
       </a>
      </code>
      :
            Number of scans that have been pruned to one partition by
            this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_pruned_scan_count_slave">
        Ndb_api_pruned_scan_count_slave
       </a>
      </code>
      :
            Number of scans that have been pruned to one partition by
            this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_range_scan_count">
        Ndb_api_range_scan_count
       </a>
      </code>
      :
            Number of range scans that have been started by this MySQL
            Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_range_scan_count_session">
        Ndb_api_range_scan_count_session
       </a>
      </code>
      :
            Number of range scans that have been started in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_range_scan_count_replica">
        Ndb_api_range_scan_count_replica
       </a>
      </code>
      :
            Number of range scans that have been started by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_range_scan_count_slave">
        Ndb_api_range_scan_count_slave
       </a>
      </code>
      :
            Number of range scans that have been started by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_read_row_count">
        Ndb_api_read_row_count
       </a>
      </code>
      :
            Total number of rows that have been read by this MySQL
            Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_read_row_count_session">
        Ndb_api_read_row_count_session
       </a>
      </code>
      :
            Total number of rows that have been read in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_read_row_count_replica">
        Ndb_api_read_row_count_replica
       </a>
      </code>
      :
            Total number of rows that have been read by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_read_row_count_slave">
        Ndb_api_read_row_count_slave
       </a>
      </code>
      :
            Total number of rows that have been read by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_scan_batch_count">
        Ndb_api_scan_batch_count
       </a>
      </code>
      :
            Number of batches of rows received by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_scan_batch_count_session">
        Ndb_api_scan_batch_count_session
       </a>
      </code>
      :
            Number of batches of rows received in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_scan_batch_count_replica">
        Ndb_api_scan_batch_count_replica
       </a>
      </code>
      :
            Number of batches of rows received by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_scan_batch_count_slave">
        Ndb_api_scan_batch_count_slave
       </a>
      </code>
      :
            Number of batches of rows received by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_table_scan_count">
        Ndb_api_table_scan_count
       </a>
      </code>
      :
            Number of table scans that have been started, including
            scans of internal tables, by this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_table_scan_count_session">
        Ndb_api_table_scan_count_session
       </a>
      </code>
      :
            Number of table scans that have been started, including
            scans of internal tables, in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_table_scan_count_replica">
        Ndb_api_table_scan_count_replica
       </a>
      </code>
      :
            Number of table scans that have been started, including
            scans of internal tables, by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_table_scan_count_slave">
        Ndb_api_table_scan_count_slave
       </a>
      </code>
      :
            Number of table scans that have been started, including
            scans of internal tables, by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_abort_count">
        Ndb_api_trans_abort_count
       </a>
      </code>
      :
            Number of transactions aborted by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_abort_count_session">
        Ndb_api_trans_abort_count_session
       </a>
      </code>
      :
            Number of transactions aborted in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_abort_count_replica">
        Ndb_api_trans_abort_count_replica
       </a>
      </code>
      :
            Number of transactions aborted by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_abort_count_slave">
        Ndb_api_trans_abort_count_slave
       </a>
      </code>
      :
            Number of transactions aborted by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_close_count">
        Ndb_api_trans_close_count
       </a>
      </code>
      :
            Number of transactions closed by this MySQL Server (SQL
            node); may be greater than sum of TransCommitCount and
            TransAbortCount.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_close_count_session">
        Ndb_api_trans_close_count_session
       </a>
      </code>
      :
            Number of transactions aborted (may be greater than sum of
            TransCommitCount and TransAbortCount) in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_close_count_replica">
        Ndb_api_trans_close_count_replica
       </a>
      </code>
      :
            Number of transactions aborted (may be greater than sum of
            TransCommitCount and TransAbortCount) by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_close_count_slave">
        Ndb_api_trans_close_count_slave
       </a>
      </code>
      :
            Number of transactions aborted (may be greater than sum of
            TransCommitCount and TransAbortCount) by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_commit_count">
        Ndb_api_trans_commit_count
       </a>
      </code>
      :
            Number of transactions committed by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_commit_count_session">
        Ndb_api_trans_commit_count_session
       </a>
      </code>
      :
            Number of transactions committed in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_commit_count_replica">
        Ndb_api_trans_commit_count_replica
       </a>
      </code>
      :
            Number of transactions committed by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_commit_count_slave">
        Ndb_api_trans_commit_count_slave
       </a>
      </code>
      :
            Number of transactions committed by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_local_read_row_count">
        Ndb_api_trans_local_read_row_count
       </a>
      </code>
      :
            Total number of rows that have been read by this MySQL
            Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_local_read_row_count_session">
        Ndb_api_trans_local_read_row_count_session
       </a>
      </code>
      :
            Total number of rows that have been read in this client
            session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_local_read_row_count_replica">
        Ndb_api_trans_local_read_row_count_replica
       </a>
      </code>
      :
            Total number of rows that have been read by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_local_read_row_count_slave">
        Ndb_api_trans_local_read_row_count_slave
       </a>
      </code>
      :
            Total number of rows that have been read by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_start_count">
        Ndb_api_trans_start_count
       </a>
      </code>
      :
            Number of transactions started by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_start_count_session">
        Ndb_api_trans_start_count_session
       </a>
      </code>
      :
            Number of transactions started in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_start_count_replica">
        Ndb_api_trans_start_count_replica
       </a>
      </code>
      :
            Number of transactions started by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_trans_start_count_slave">
        Ndb_api_trans_start_count_slave
       </a>
      </code>
      :
            Number of transactions started by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_uk_op_count">
        Ndb_api_uk_op_count
       </a>
      </code>
      :
            Number of operations based on or using unique keys by this
            MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_uk_op_count_session">
        Ndb_api_uk_op_count_session
       </a>
      </code>
      :
            Number of operations based on or using unique keys in this
            client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_uk_op_count_replica">
        Ndb_api_uk_op_count_replica
       </a>
      </code>
      :
            Number of operations based on or using unique keys by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_uk_op_count_slave">
        Ndb_api_uk_op_count_slave
       </a>
      </code>
      :
            Number of operations based on or using unique keys by this
            replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_exec_complete_count">
        Ndb_api_wait_exec_complete_count
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            operation execution to complete by this MySQL Server (SQL
            node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_exec_complete_count_session">
        Ndb_api_wait_exec_complete_count_session
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            operation execution to complete in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_exec_complete_count_replica">
        Ndb_api_wait_exec_complete_count_replica
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            operation execution to complete by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_exec_complete_count_slave">
        Ndb_api_wait_exec_complete_count_slave
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            operation execution to complete by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_meta_request_count">
        Ndb_api_wait_meta_request_count
       </a>
      </code>
      :
            Number of times thread has been blocked waiting for
            metadata-based signal by this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_meta_request_count_session">
        Ndb_api_wait_meta_request_count_session
       </a>
      </code>
      :
            Number of times thread has been blocked waiting for
            metadata-based signal in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_meta_request_count_replica">
        Ndb_api_wait_meta_request_count_replica
       </a>
      </code>
      :
            Number of times thread has been blocked waiting for
            metadata-based signal by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_meta_request_count_slave">
        Ndb_api_wait_meta_request_count_slave
       </a>
      </code>
      :
            Number of times thread has been blocked waiting for
            metadata-based signal by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_nanos_count">
        Ndb_api_wait_nanos_count
       </a>
      </code>
      :
            Total time (in nanoseconds) spent waiting for some type of
            signal from data nodes by this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_nanos_count_session">
        Ndb_api_wait_nanos_count_session
       </a>
      </code>
      :
            Total time (in nanoseconds) spent waiting for some type of
            signal from data nodes in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_nanos_count_replica">
        Ndb_api_wait_nanos_count_replica
       </a>
      </code>
      :
            Total time (in nanoseconds) spent waiting for some type of
            signal from data nodes by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_nanos_count_slave">
        Ndb_api_wait_nanos_count_slave
       </a>
      </code>
      :
            Total time (in nanoseconds) spent waiting for some type of
            signal from data nodes by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_scan_result_count">
        Ndb_api_wait_scan_result_count
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            scan-based signal by this MySQL Server (SQL node).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_scan_result_count_session">
        Ndb_api_wait_scan_result_count_session
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            scan-based signal in this client session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_scan_result_count_replica">
        Ndb_api_wait_scan_result_count_replica
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            scan-based signal by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_api_wait_scan_result_count_slave">
        Ndb_api_wait_scan_result_count_slave
       </a>
      </code>
      :
            Number of times thread has been blocked while waiting for
            scan-based signal by this replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_autoincrement_prefetch_sz">
        ndb_autoincrement_prefetch_sz
       </a>
      </code>
      :
            NDB auto-increment prefetch size.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_clear_apply_status">
        ndb_clear_apply_status
       </a>
      </code>
      :
            Causes RESET SLAVE/RESET REPLICA to clear all rows from
            ndb_apply_status table; ON by default.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_cluster_node_id">
        Ndb_cluster_node_id
       </a>
      </code>
      :
            Node ID of this server when acting as NDB Cluster SQL node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_config_from_host">
        Ndb_config_from_host
       </a>
      </code>
      :
            NDB Cluster management server host name or IP address.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_config_from_port">
        Ndb_config_from_port
       </a>
      </code>
      :
            Port for connecting to NDB Cluster management server.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_config_generation">
        Ndb_config_generation
       </a>
      </code>
      :
            Generation number of the current configuration of the
            cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_epoch">
        Ndb_conflict_fn_epoch
       </a>
      </code>
      :
            Number of rows that have been found in conflict by
            NDB$EPOCH() NDB replication conflict detection function.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_epoch2">
        Ndb_conflict_fn_epoch2
       </a>
      </code>
      :
            Number of rows that have been found in conflict by NDB
            replication NDB$EPOCH2() conflict detection function.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_epoch2_trans">
        Ndb_conflict_fn_epoch2_trans
       </a>
      </code>
      :
            Number of rows that have been found in conflict by NDB
            replication NDB$EPOCH2_TRANS() conflict detection function.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_epoch_trans">
        Ndb_conflict_fn_epoch_trans
       </a>
      </code>
      :
            Number of rows that have been found in conflict by
            NDB$EPOCH_TRANS() conflict detection function.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_max">
        Ndb_conflict_fn_max
       </a>
      </code>
      :
            Number of times that NDB replication conflict resolution
            based on "greater timestamp wins" has been applied to update
            and delete operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_max_del_win">
        Ndb_conflict_fn_max_del_win
       </a>
      </code>
      :
            Number of times that NDB replication conflict resolution
            based on outcome of NDB$MAX_DELETE_WIN() has been applied to
            update and delete operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_max_ins">
        Ndb_conflict_fn_max_ins
       </a>
      </code>
      :
            Number of times that NDB replication conflict resolution
            based on "greater timestamp wins" has been applied to insert
            operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_max_del_win_ins">
        Ndb_conflict_fn_max_del_win_ins
       </a>
      </code>
      :
            Number of times that NDB replication conflict resolution
            based on outcome of NDB$MAX_DEL_WIN_INS() has been applied
            to insert operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_fn_old">
        Ndb_conflict_fn_old
       </a>
      </code>
      :
            Number of times that NDB replication "same timestamp wins"
            conflict resolution has been applied.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_last_conflict_epoch">
        Ndb_conflict_last_conflict_epoch
       </a>
      </code>
      :
            Most recent NDB epoch on this replica in which some conflict
            was detected.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_last_stable_epoch">
        Ndb_conflict_last_stable_epoch
       </a>
      </code>
      :
            Most recent epoch containing no conflicts.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_reflected_op_discard_count">
        Ndb_conflict_reflected_op_discard_count
       </a>
      </code>
      :
            Number of reflected operations that were not applied due
            error during execution.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_reflected_op_prepare_count">
        Ndb_conflict_reflected_op_prepare_count
       </a>
      </code>
      :
            Number of reflected operations received that have been
            prepared for execution.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_refresh_op_count">
        Ndb_conflict_refresh_op_count
       </a>
      </code>
      :
            Number of refresh operations that have been prepared.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_conflict_role">
        ndb_conflict_role
       </a>
      </code>
      :
            Role for replica to play in conflict detection and
            resolution. Value is one of PRIMARY, SECONDARY, PASS, or
            NONE (default). Can be changed only when replication SQL
            thread is stopped. See documentation for further
            information.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_trans_conflict_commit_count">
        Ndb_conflict_trans_conflict_commit_count
       </a>
      </code>
      :
            Number of epoch transactions committed after requiring
            transactional conflict handling.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_trans_detect_iter_count">
        Ndb_conflict_trans_detect_iter_count
       </a>
      </code>
      :
            Number of internal iterations required to commit epoch
            transaction. Should be (slightly) greater than or equal to
            Ndb_conflict_trans_conflict_commit_count.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_trans_reject_count">
        Ndb_conflict_trans_reject_count
       </a>
      </code>
      :
            Number of transactions rejected after being found in
            conflict by transactional conflict function.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_trans_row_conflict_count">
        Ndb_conflict_trans_row_conflict_count
       </a>
      </code>
      :
            Number of rows found in conflict by transactional conflict
            function. Includes any rows included in or dependent on
            conflicting transactions.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_conflict_trans_row_reject_count">
        Ndb_conflict_trans_row_reject_count
       </a>
      </code>
      :
            Total number of rows realigned after being found in conflict
            by transactional conflict function. Includes
            Ndb_conflict_trans_row_conflict_count and any rows included
            in or dependent on conflicting transactions.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_data_node_neighbour">
        ndb_data_node_neighbour
       </a>
      </code>
      :
            Specifies cluster data node "closest" to this MySQL Server,
            for transaction hinting and fully replicated tables.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_default_column_format">
        ndb_default_column_format
       </a>
      </code>
      :
            Sets default row format and column format (FIXED or DYNAMIC)
            used for new NDB tables.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_deferred_constraints">
        ndb_deferred_constraints
       </a>
      </code>
      :
            Specifies that constraint checks should be deferred (where
            these are supported). Not normally needed or used; for
            testing purposes only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_dbg_check_shares">
        ndb_dbg_check_shares
       </a>
      </code>
      :
            Check for any lingering shares (debug builds only).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-schema-dist-timeout">
        ndb-schema-dist-timeout
       </a>
      </code>
      :
            How long to wait before detecting timeout during schema
            distribution.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_distribution">
        ndb_distribution
       </a>
      </code>
      :
            Default distribution for new tables in NDBCLUSTER (KEYHASH
            or LINHASH, default is KEYHASH).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_epoch_delete_delete_count">
        Ndb_epoch_delete_delete_count
       </a>
      </code>
      :
            Number of delete-delete conflicts detected (delete operation
            is applied, but row does not exist).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_eventbuffer_free_percent">
        ndb_eventbuffer_free_percent
       </a>
      </code>
      :
            Percentage of free memory that should be available in event
            buffer before resumption of buffering, after reaching limit
            set by ndb_eventbuffer_max_alloc.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_eventbuffer_max_alloc">
        ndb_eventbuffer_max_alloc
       </a>
      </code>
      :
            Maximum memory that can be allocated for buffering events by
            NDB API. Defaults to 0 (no limit).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_execute_count">
        Ndb_execute_count
       </a>
      </code>
      :
            Number of round trips to NDB kernel made by operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_extra_logging">
        ndb_extra_logging
       </a>
      </code>
      :
            Controls logging of NDB Cluster schema, connection, and data
            distribution events in MySQL error log.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_force_send">
        ndb_force_send
       </a>
      </code>
      :
            Forces sending of buffers to NDB immediately, without
            waiting for other threads.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_fully_replicated">
        ndb_fully_replicated
       </a>
      </code>
      :
            Whether new NDB tables are fully replicated.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_index_stat_enable">
        ndb_index_stat_enable
       </a>
      </code>
      :
            Use NDB index statistics in query optimization.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_index_stat_option">
        ndb_index_stat_option
       </a>
      </code>
      :
            Comma-separated list of tunable options for NDB index
            statistics; list should contain no spaces.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_join_pushdown">
        ndb_join_pushdown
       </a>
      </code>
      :
            Enables pushing down of joins to data nodes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_last_commit_epoch_server">
        Ndb_last_commit_epoch_server
       </a>
      </code>
      :
            Epoch most recently committed by NDB.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_last_commit_epoch_session">
        Ndb_last_commit_epoch_session
       </a>
      </code>
      :
            Epoch most recently committed by this NDB client.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_apply_status">
        ndb_log_apply_status
       </a>
      </code>
      :
            Whether or not MySQL server acting as replica logs
            mysql.ndb_apply_status updates received from its immediate
            source in its own binary log, using its own server ID.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_bin">
        ndb_log_bin
       </a>
      </code>
      :
            Write updates to NDB tables in binary log. Effective only if
            binary logging is enabled with --log-bin.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_binlog_index">
        ndb_log_binlog_index
       </a>
      </code>
      :
            Insert mapping between epochs and binary log positions into
            ndb_binlog_index table. Defaults to ON. Effective only if
            binary logging is enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_cache_size">
        ndb_log_cache_size
       </a>
      </code>
      :
            Set size of transaction cache used for recording NDB binary
            log.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_empty_epochs">
        ndb_log_empty_epochs
       </a>
      </code>
      :
            When enabled, epochs in which there were no changes are
            written to ndb_apply_status and ndb_binlog_index tables,
            even when log_replica_updates or log_slave_updates is
            enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_empty_update">
        ndb_log_empty_update
       </a>
      </code>
      :
            When enabled, updates which produce no changes are written
            to ndb_apply_status and ndb_binlog_index tables, even when
            log_replica_updates or log_slave_updates is enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_exclusive_reads">
        ndb_log_exclusive_reads
       </a>
      </code>
      :
            Log primary key reads with exclusive locks; allow conflict
            resolution based on read conflicts.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_orig">
        ndb_log_orig
       </a>
      </code>
      :
            Whether id and epoch of originating server are recorded in
            mysql.ndb_binlog_index table. Set using --ndb-log-orig
            option when starting mysqld.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_transaction_id">
        ndb_log_transaction_id
       </a>
      </code>
      :
            Whether NDB transaction IDs are written into binary log
            (Read-only).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_transaction_compression">
        ndb_log_transaction_compression
       </a>
      </code>
      :
            Whether to compress NDB binary log; can also be enabled on
            startup by enabling --binlog-transaction-compression option.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_log_transaction_compression_level_zstd">
        ndb_log_transaction_compression_level_zstd
       </a>
      </code>
      :
            The ZSTD compression level to use when writing compressed
            transactions to the NDB binary log.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_metadata_check">
        ndb_metadata_check
       </a>
      </code>
      :
            Enable auto-detection of NDB metadata changes with respect
            to MySQL data dictionary; enabled by default.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_metadata_check_interval">
        ndb_metadata_check_interval
       </a>
      </code>
      :
            Interval in seconds to perform check for NDB metadata
            changes with respect to MySQL data dictionary.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_metadata_detected_count">
        Ndb_metadata_detected_count
       </a>
      </code>
      :
            Number of times NDB metadata change monitor thread has
            detected changes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_metadata_excluded_count">
        Ndb_metadata_excluded_count
       </a>
      </code>
      :
            Number of NDB metadata objects that NDB binlog thread has
            failed to synchronize.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_metadata_sync">
        ndb_metadata_sync
       </a>
      </code>
      :
            Triggers immediate synchronization of all changes between
            NDB dictionary and MySQL data dictionary; causes
            ndb_metadata_check and ndb_metadata_check_interval values to
            be ignored. Resets to false when synchronization is
            complete.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_metadata_synced_count">
        Ndb_metadata_synced_count
       </a>
      </code>
      :
            Number of NDB metadata objects which have been synchronized.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_number_of_data_nodes">
        Ndb_number_of_data_nodes
       </a>
      </code>
      :
            Number of data nodes in this NDB cluster; set only if server
            participates in cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndb-optimization-delay">
        ndb-optimization-delay
       </a>
      </code>
      :
            Number of milliseconds to wait between processing sets of
            rows by OPTIMIZE TABLE on NDB tables.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_optimized_node_selection">
        ndb_optimized_node_selection
       </a>
      </code>
      :
            Determines how SQL node chooses cluster data node to use as
            transaction coordinator.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_pruned_scan_count">
        Ndb_pruned_scan_count
       </a>
      </code>
      :
            Number of scans executed by NDB since cluster was last
            started where partition pruning could be used.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_pushed_queries_defined">
        Ndb_pushed_queries_defined
       </a>
      </code>
      :
            Number of joins that API nodes have attempted to push down
            to data nodes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_pushed_queries_dropped">
        Ndb_pushed_queries_dropped
       </a>
      </code>
      :
            Number of joins that API nodes have tried to push down, but
            failed.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_pushed_queries_executed">
        Ndb_pushed_queries_executed
       </a>
      </code>
      :
            Number of joins successfully pushed down and executed on
            data nodes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_pushed_reads">
        Ndb_pushed_reads
       </a>
      </code>
      :
            Number of reads executed on data nodes by pushed-down joins.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_read_backup">
        ndb_read_backup
       </a>
      </code>
      :
            Enable read from any replica for all NDB tables; use
            NDB_TABLE=READ_BACKUP={0|1} with CREATE TABLE or ALTER TABLE
            to enable or disable for individual NDB tables.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_recv_thread_activation_threshold">
        ndb_recv_thread_activation_threshold
       </a>
      </code>
      :
            Activation threshold when receive thread takes over polling
            of cluster connection (measured in concurrently active
            threads).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_recv_thread_cpu_mask">
        ndb_recv_thread_cpu_mask
       </a>
      </code>
      :
            CPU mask for locking receiver threads to specific CPUs;
            specified as hexadecimal. See documentation for details.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_replica_max_replicated_epoch">
        Ndb_replica_max_replicated_epoch
       </a>
      </code>
      :
            Most recently committed NDB epoch on this replica. When this
            value is greater than or equal to
            Ndb_conflict_last_conflict_epoch, no conflicts have yet been
            detected.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_replica_batch_size">
        ndb_replica_batch_size
       </a>
      </code>
      :
            Batch size in bytes for replica applier.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_report_thresh_binlog_epoch_slip">
        ndb_report_thresh_binlog_epoch_slip
       </a>
      </code>
      :
            NDB 7.5 and later: Threshold for number of epochs completely
            buffered, but not yet consumed by binlog injector thread
            which when exceeded generates BUFFERED_EPOCHS_OVER_THRESHOLD
            event buffer status message; prior to NDB 7.5: Threshold for
            number of epochs to lag behind before reporting binary log
            status.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_report_thresh_binlog_mem_usage">
        ndb_report_thresh_binlog_mem_usage
       </a>
      </code>
      :
            Threshold for percentage of free memory remaining before
            reporting binary log status.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_row_checksum">
        ndb_row_checksum
       </a>
      </code>
      :
            When enabled, set row checksums; enabled by default.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_scan_count">
        Ndb_scan_count
       </a>
      </code>
      :
            Total number of scans executed by NDB since cluster was last
            started.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_schema_dist_lock_wait_timeout">
        ndb_schema_dist_lock_wait_timeout
       </a>
      </code>
      :
            Time during schema distribution to wait for lock before
            returning error.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_schema_dist_timeout">
        ndb_schema_dist_timeout
       </a>
      </code>
      :
            Time to wait before detecting timeout during schema
            distribution.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_schema_dist_upgrade_allowed">
        ndb_schema_dist_upgrade_allowed
       </a>
      </code>
      :
            Allow schema distribution table upgrade when connecting to
            NDB.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_show_foreign_key_mock_tables">
        ndb_show_foreign_key_mock_tables
       </a>
      </code>
      :
            Show mock tables used to support foreign_key_checks=0.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_slave_conflict_role">
        ndb_slave_conflict_role
       </a>
      </code>
      :
            Role for replica to play in conflict detection and
            resolution. Value is one of PRIMARY, SECONDARY, PASS, or
            NONE (default). Can be changed only when replication SQL
            thread is stopped. See documentation for further
            information.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_slave_max_replicated_epoch">
        Ndb_slave_max_replicated_epoch
       </a>
      </code>
      :
            Most recently committed NDB epoch on this replica. When this
            value is greater than or equal to
            Ndb_conflict_last_conflict_epoch, no conflicts have yet been
            detected.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_system_name">
        Ndb_system_name
       </a>
      </code>
      :
            Configured cluster system name; empty if server not
            connected to NDB.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_table_no_logging">
        ndb_table_no_logging
       </a>
      </code>
      :
            NDB tables created when this setting is enabled are not
            checkpointed to disk (although table schema files are
            created). Setting in effect when table is created with or
            altered to use NDBCLUSTER persists for table's lifetime.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_table_temporary">
        ndb_table_temporary
       </a>
      </code>
      :
            NDB tables are not persistent on disk: no schema files are
            created and tables are not logged.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#statvar_Ndb_trans_hint_count_session">
        Ndb_trans_hint_count_session
       </a>
      </code>
      :
            Number of transactions using hints that have been started in
            this session.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_use_copying_alter_table">
        ndb_use_copying_alter_table
       </a>
      </code>
      :
            Use copying ALTER TABLE operations in NDB Cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_use_exact_count">
        ndb_use_exact_count
       </a>
      </code>
      :
            Forces NDB to use a count of records during SELECT COUNT(*)
            query planning to speed up this type of query.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_use_transactions">
        ndb_use_transactions
       </a>
      </code>
      :
            Set to OFF, to disable transaction support by NDB. Not
            recommended except in certain special cases; see
            documentation for details.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_version">
        ndb_version
       </a>
      </code>
      :
            Shows build and NDB engine version as an integer.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndb_version_string">
        ndb_version_string
       </a>
      </code>
      :
            Shows build information including NDB engine version in
            ndb-x.y.z format.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndbcluster">
        ndbcluster
       </a>
      </code>
      :
            Enable NDB Cluster (if this version of MySQL supports it).
            Disabled by
      <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_skip-ndbcluster">
       <code class="option">
        --skip-ndbcluster
       </code>
      </a>
      .
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_ndbinfo">
        ndbinfo
       </a>
      </code>
      :
            Enable ndbinfo plugin, if supported.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_database">
        ndbinfo_database
       </a>
      </code>
      :
            Name used for NDB information database; read only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_max_bytes">
        ndbinfo_max_bytes
       </a>
      </code>
      :
            Used for debugging only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_max_rows">
        ndbinfo_max_rows
       </a>
      </code>
      :
            Used for debugging only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_offline">
        ndbinfo_offline
       </a>
      </code>
      :
            Put ndbinfo database into offline mode, in which no rows are
            returned from tables or views.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_show_hidden">
        ndbinfo_show_hidden
       </a>
      </code>
      :
            Whether to show ndbinfo internal base tables in mysql
            client; default is OFF.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_table_prefix">
        ndbinfo_table_prefix
       </a>
      </code>
      :
            Prefix to use for naming ndbinfo internal base tables; read
            only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_ndbinfo_version">
        ndbinfo_version
       </a>
      </code>
      :
            ndbinfo engine version; read only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_replica_allow_batching">
        replica_allow_batching
       </a>
      </code>
      :
            Turns update batching on and off for replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_server_id_bits">
        server_id_bits
       </a>
      </code>
      :
            Number of least significant bits in server_id actually used
            for identifying server, permitting NDB API applications to
            store application data in most significant bits. server_id
            must be less than 2 to power of this value.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#option_mysqld_skip-ndbcluster">
        skip-ndbcluster
       </a>
      </code>
      :
            Disable NDB Cluster storage engine.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_slave_allow_batching">
        slave_allow_batching
       </a>
      </code>
      :
            Turns update batching on and off for replica.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-options-variables.html#sysvar_transaction_allow_batching">
        transaction_allow_batching
       </a>
      </code>
      :
            Allows batching of statements within one transaction.
            Disable AUTOCOMMIT to use.
     </p>
    </li>
   </ul>
  </div>
 </div>
 <br/>
</div>
