<div id="docs-body">
 <div class="section">
  <div class="titlepage">
   <div>
    <div>
     <h4 class="title">
      <a name="mysql-cluster-params-ndbd">
      </a>
      25.4.2.1 NDB Cluster Data Node Configuration Parameters
     </h4>
    </div>
   </div>
  </div>
  <a class="indexterm" name="idm46045121913264">
  </a>
  <a class="indexterm" name="idm46045121911808">
  </a>
  <a class="indexterm" name="idm46045121910736">
  </a>
  <p>
   The listings in this section provide information about
        parameters used in the
   <code class="literal">
    [ndbd]
   </code>
   or
   <code class="literal">
    [ndbd default]
   </code>
   sections of a
   <code class="filename">
    config.ini
   </code>
   file for configuring NDB Cluster
        data nodes. For detailed descriptions and other additional
        information about each of these parameters, see
   <a class="xref" href="mysql-cluster-ndbd-definition.html" title="25.4.3.6 Defining NDB Cluster Data Nodes">
    Section 25.4.3.6, “Defining NDB Cluster Data Nodes”
   </a>
   .
  </p>
  <p>
   These parameters also apply to
   <a class="link" href="mysql-cluster-programs-ndbmtd.html" title="25.5.3 ndbmtd — The NDB Cluster Data Node Daemon (Multi-Threaded)">
    <span class="command">
     <strong>
      ndbmtd
     </strong>
    </span>
   </a>
   , the
        multithreaded version of
   <a class="link" href="mysql-cluster-programs-ndbd.html" title="25.5.1 ndbd — The NDB Cluster Data Node Daemon">
    <span class="command">
     <strong>
      ndbd
     </strong>
    </span>
   </a>
   . A separate
        listing of parameters specific to
   <a class="link" href="mysql-cluster-programs-ndbmtd.html" title="25.5.3 ndbmtd — The NDB Cluster Data Node Daemon (Multi-Threaded)">
    <span class="command">
     <strong>
      ndbmtd
     </strong>
    </span>
   </a>
   follows.
  </p>
  <div class="itemizedlist">
   <a name="ndbparam-summary-list-ndbd">
   </a>
   <ul class="itemizedlist" style="list-style-type: disc; ">
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-arbitration">
        Arbitration
       </a>
      </code>
      :
            How arbitration should be performed to avoid split-brain
            issues in event of node failure.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-arbitrationtimeout">
        ArbitrationTimeout
       </a>
      </code>
      :
            Maximum time (milliseconds) database partition waits for
            arbitration signal.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupdatabuffersize">
        BackupDataBufferSize
       </a>
      </code>
      :
            Default size of databuffer for backup (in bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupdatadir">
        BackupDataDir
       </a>
      </code>
      :
            Path to where to store backups. Note that string '/BACKUP'
            is always appended to this setting, so that *effective*
            default is FileSystemPath/BACKUP.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupdiskwritespeedpct">
        BackupDiskWriteSpeedPct
       </a>
      </code>
      :
            Sets percentage of data node's allocated maximum write speed
            (MaxDiskWriteSpeed) to reserve for LCPs when starting
            backup.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backuplogbuffersize">
        BackupLogBufferSize
       </a>
      </code>
      :
            Default size of log buffer for backup (in bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupmaxwritesize">
        BackupMaxWriteSize
       </a>
      </code>
      :
            Maximum size of file system writes made by backup (in
            bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupmemory">
        BackupMemory
       </a>
      </code>
      :
            Total memory allocated for backups per node (in bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupreportfrequency">
        BackupReportFrequency
       </a>
      </code>
      :
            Frequency of backup status reports during backup in seconds.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-backupwritesize">
        BackupWriteSize
       </a>
      </code>
      :
            Default size of file system writes made by backup (in
            bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-batchsizeperlocalscan">
        BatchSizePerLocalScan
       </a>
      </code>
      :
            Used to calculate number of lock records for scan with hold
            lock.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-buildindexthreads">
        BuildIndexThreads
       </a>
      </code>
      :
            Number of threads to use for building ordered indexes during
            system or node restart. Also applies when running
            ndb_restore --rebuild-indexes. Setting this parameter to 0
            disables multithreaded building of ordered indexes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-compressedbackup">
        CompressedBackup
       </a>
      </code>
      :
            Use zlib to compress backups as they are written.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-compressedlcp">
        CompressedLCP
       </a>
      </code>
      :
            Write compressed LCPs using zlib.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-connectcheckintervaldelay">
        ConnectCheckIntervalDelay
       </a>
      </code>
      :
            Time between data node connectivity check stages. Data node
            is considered suspect after 1 interval and dead after 2
            intervals with no response.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-crashoncorruptedtuple">
        CrashOnCorruptedTuple
       </a>
      </code>
      :
            When enabled, forces node to shut down whenever it detects
            corrupted tuple.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-datadir">
        DataDir
       </a>
      </code>
      :
            Data directory for this node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-datamemory">
        DataMemory
       </a>
      </code>
      :
            Number of bytes on each data node allocated for storing
            data; subject to available system RAM and size of
            IndexMemory.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-defaulthashmapsize">
        DefaultHashMapSize
       </a>
      </code>
      :
            Set size (in buckets) to use for table hash maps. Three
            values are supported: 0, 240, and 3840.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-dicttrace">
        DictTrace
       </a>
      </code>
      :
            Enable DBDICT debugging; for NDB development.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-diskdatausingsamedisk">
        DiskDataUsingSameDisk
       </a>
      </code>
      :
            Set to false if Disk Data tablespaces are located on
            separate physical disks.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-diskiothreadpool">
        DiskIOThreadPool
       </a>
      </code>
      :
            Number of unbound threads for file access, applies to disk
            data only.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-diskless">
        Diskless
       </a>
      </code>
      :
            Run without using disk.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-diskpagebufferentries">
        DiskPageBufferEntries
       </a>
      </code>
      :
            Memory to allocate in DiskPageBufferMemory; very large disk
            transactions may require increasing this value.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-diskpagebuffermemory">
        DiskPageBufferMemory
       </a>
      </code>
      :
            Number of bytes on each data node allocated for disk page
            buffer cache.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-disksyncsize">
        DiskSyncSize
       </a>
      </code>
      :
            Amount of data written to file before synch is forced.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-enablepartiallcp">
        EnablePartialLcp
       </a>
      </code>
      :
            Enable partial LCP (true); if this is disabled (false), all
            LCPs write full checkpoints.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-enableredocontrol">
        EnableRedoControl
       </a>
      </code>
      :
            Enable adaptive checkpointing speed for controlling redo log
            usage.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-encryptedfilesystem">
        EncryptedFileSystem
       </a>
      </code>
      :
            Encrypt local checkpoint and tablespace files. EXPERIMENTAL;
            NOT SUPPORTED IN PRODUCTION.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-eventlogbuffersize">
        EventLogBufferSize
       </a>
      </code>
      :
            Size of circular buffer for NDB log events within data
            nodes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-executeoncomputer">
        ExecuteOnComputer
       </a>
      </code>
      :
            String referencing earlier defined COMPUTER.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-extrasendbuffermemory">
        ExtraSendBufferMemory
       </a>
      </code>
      :
            Memory to use for send buffers in addition to any allocated
            by TotalSendBufferMemory or SendBufferMemory. Default (0)
            allows up to 16MB.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-filesystempath">
        FileSystemPath
       </a>
      </code>
      :
            Path to directory where data node stores its data (directory
            must exist).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-filesystempathdatafiles">
        FileSystemPathDataFiles
       </a>
      </code>
      :
            Path to directory where data node stores its Disk Data
            files. Default value is FilesystemPathDD, if set; otherwise,
            FilesystemPath is used if it is set; otherwise, value of
            DataDir is used.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-filesystempathdd">
        FileSystemPathDD
       </a>
      </code>
      :
            Path to directory where data node stores its Disk Data and
            undo files. Default value is FileSystemPath, if set;
            otherwise, value of DataDir is used.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-filesystempathundofiles">
        FileSystemPathUndoFiles
       </a>
      </code>
      :
            Path to directory where data node stores its undo files for
            Disk Data. Default value is FilesystemPathDD, if set;
            otherwise, FilesystemPath is used if it is set; otherwise,
            value of DataDir is used.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-fragmentlogfilesize">
        FragmentLogFileSize
       </a>
      </code>
      :
            Size of each redo log file.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-heartbeatintervaldbapi">
        HeartbeatIntervalDbApi
       </a>
      </code>
      :
            Time between API node-data node heartbeats. (API connection
            closed after 3 missed heartbeats).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-heartbeatintervaldbdb">
        HeartbeatIntervalDbDb
       </a>
      </code>
      :
            Time between data node-to-data node heartbeats; data node
            considered dead after 3 missed heartbeats.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-heartbeatorder">
        HeartbeatOrder
       </a>
      </code>
      :
            Sets order in which data nodes check each others' heartbeats
            for determining whether given node is still active and
            connected to cluster. Must be zero for all data nodes or
            distinct nonzero values for all data nodes; see
            documentation for further guidance.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-hostname">
        HostName
       </a>
      </code>
      :
            Host name or IP address for this data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexmemory">
        IndexMemory
       </a>
      </code>
      :
            Number of bytes on each data node allocated for storing
            indexes; subject to available system RAM and size of
            DataMemory.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstatautocreate">
        IndexStatAutoCreate
       </a>
      </code>
      :
            Enable/disable automatic statistics collection when indexes
            are created.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstatautoupdate">
        IndexStatAutoUpdate
       </a>
      </code>
      :
            Monitor indexes for changes and trigger automatic statistics
            updates.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstatsavescale">
        IndexStatSaveScale
       </a>
      </code>
      :
            Scaling factor used in determining size of stored index
            statistics.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstatsavesize">
        IndexStatSaveSize
       </a>
      </code>
      :
            Maximum size in bytes for saved statistics per index.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstattriggerpct">
        IndexStatTriggerPct
       </a>
      </code>
      :
            Threshold percent change in DML operations for index
            statistics updates. Value is scaled down by
            IndexStatTriggerScale.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstattriggerscale">
        IndexStatTriggerScale
       </a>
      </code>
      :
            Scale down IndexStatTriggerPct by this amount, multiplied by
            base 2 logarithm of index size, for large index. Set to 0 to
            disable scaling.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-indexstatupdatedelay">
        IndexStatUpdateDelay
       </a>
      </code>
      :
            Minimum delay between automatic index statistics updates for
            given index. 0 means no delay.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-initfragmentlogfiles">
        InitFragmentLogFiles
       </a>
      </code>
      :
            Initialize fragment log files, using sparse or full format.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-initiallogfilegroup">
        InitialLogFileGroup
       </a>
      </code>
      :
            Describes log file group that is created during initial
            start. See documentation for format.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-initialnoofopenfiles">
        InitialNoOfOpenFiles
       </a>
      </code>
      :
            Initial number of files open per data node. (One thread is
            created per file).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-initialtablespace">
        InitialTablespace
       </a>
      </code>
      :
            Describes tablespace that is created during initial start.
            See documentation for format.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-insertrecoverywork">
        InsertRecoveryWork
       </a>
      </code>
      :
            Percentage of RecoveryWork used for inserted rows; has no
            effect unless partial local checkpoints are in use.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-keepalivesendinterval">
        KeepAliveSendInterval
       </a>
      </code>
      :
            Time between keep-alive signals on links between data nodes,
            in milliseconds. Set to 0 to disable.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-latealloc">
        LateAlloc
       </a>
      </code>
      :
            Allocate memory after connection to management server has
            been established.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-lcpscanprogresstimeout">
        LcpScanProgressTimeout
       </a>
      </code>
      :
            Maximum time that local checkpoint fragment scan can be
            stalled before node is shut down to ensure systemwide LCP
            progress. Use 0 to disable.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-locationdomainid">
        LocationDomainId
       </a>
      </code>
      :
            Assign this data node to specific availability domain or
            zone. 0 (default) leaves this unset.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-lockexecutethreadtocpu">
        LockExecuteThreadToCPU
       </a>
      </code>
      :
            Comma-delimited list of CPU IDs.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-lockmaintthreadstocpu">
        LockMaintThreadsToCPU
       </a>
      </code>
      :
            CPU ID indicating which CPU runs maintenance threads.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-lockpagesinmainmemory">
        LockPagesInMainMemory
       </a>
      </code>
      :
            0=disable locking, 1=lock after memory allocation, 2=lock
            before memory allocation.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelcheckpoint">
        LogLevelCheckpoint
       </a>
      </code>
      :
            Log level of local and global checkpoint information printed
            to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelcongestion">
        LogLevelCongestion
       </a>
      </code>
      :
            Level of congestion information printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelconnection">
        LogLevelConnection
       </a>
      </code>
      :
            Level of node connect/disconnect information printed to
            stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelerror">
        LogLevelError
       </a>
      </code>
      :
            Transporter, heartbeat errors printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelinfo">
        LogLevelInfo
       </a>
      </code>
      :
            Heartbeat and log information printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelnoderestart">
        LogLevelNodeRestart
       </a>
      </code>
      :
            Level of node restart and node failure information printed
            to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelshutdown">
        LogLevelShutdown
       </a>
      </code>
      :
            Level of node shutdown information printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelstartup">
        LogLevelStartup
       </a>
      </code>
      :
            Level of node startup information printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-loglevelstatistic">
        LogLevelStatistic
       </a>
      </code>
      :
            Level of transaction, operation, and transporter information
            printed to stdout.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-longmessagebuffer">
        LongMessageBuffer
       </a>
      </code>
      :
            Number of bytes allocated on each data node for internal
            long messages.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxallocate">
        MaxAllocate
       </a>
      </code>
      :
            No longer used; has no effect.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxbufferedepochs">
        MaxBufferedEpochs
       </a>
      </code>
      :
            Allowed numbered of epochs that subscribing node can lag
            behind (unprocessed epochs). Exceeding causes lagging
            subscribers to be disconnected.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxbufferedepochbytes">
        MaxBufferedEpochBytes
       </a>
      </code>
      :
            Total number of bytes allocated for buffering epochs.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxdiskdatalatency">
        MaxDiskDataLatency
       </a>
      </code>
      :
            Maximum allowed mean latency of disk access (ms) before
            starting to abort transactions.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxdiskwritespeed">
        MaxDiskWriteSpeed
       </a>
      </code>
      :
            Maximum number of bytes per second that can be written by
            LCP and backup when no restarts are ongoing.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxdiskwritespeedothernoderestart">
        MaxDiskWriteSpeedOtherNodeRestart
       </a>
      </code>
      :
            Maximum number of bytes per second that can be written by
            LCP and backup when another node is restarting.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxdiskwritespeedownrestart">
        MaxDiskWriteSpeedOwnRestart
       </a>
      </code>
      :
            Maximum number of bytes per second that can be written by
            LCP and backup when this node is restarting.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxfkbuildbatchsize">
        MaxFKBuildBatchSize
       </a>
      </code>
      :
            Maximum scan batch size to use for building foreign keys.
            Increasing this value may speed up builds of foreign keys
            but impacts ongoing traffic as well.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxdmloperationspertransaction">
        MaxDMLOperationsPerTransaction
       </a>
      </code>
      :
            Limit size of transaction; aborts transaction if it requires
            more than this many DML operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxlcpstartdelay">
        MaxLCPStartDelay
       </a>
      </code>
      :
            Time in seconds that LCP polls for checkpoint mutex (to
            allow other data nodes to complete metadata
            synchronization), before putting itself in lock queue for
            parallel recovery of table data.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofattributes">
        MaxNoOfAttributes
       </a>
      </code>
      :
            Suggests total number of attributes stored in database (sum
            over all tables).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofconcurrentindexoperations">
        MaxNoOfConcurrentIndexOperations
       </a>
      </code>
      :
            Total number of index operations that can execute
            simultaneously on one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofconcurrentoperations">
        MaxNoOfConcurrentOperations
       </a>
      </code>
      :
            Maximum number of operation records in transaction
            coordinator.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofconcurrentscans">
        MaxNoOfConcurrentScans
       </a>
      </code>
      :
            Maximum number of scans executing concurrently on data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofconcurrentsuboperations">
        MaxNoOfConcurrentSubOperations
       </a>
      </code>
      :
            Maximum number of concurrent subscriber operations.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofconcurrenttransactions">
        MaxNoOfConcurrentTransactions
       </a>
      </code>
      :
            Maximum number of transactions executing concurrently on
            this data node, total number of transactions that can be
            executed concurrently is this value times number of data
            nodes in cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooffiredtriggers">
        MaxNoOfFiredTriggers
       </a>
      </code>
      :
            Total number of triggers that can fire simultaneously on one
            data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooflocaloperations">
        MaxNoOfLocalOperations
       </a>
      </code>
      :
            Maximum number of operation records defined on this data
            node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooflocalscans">
        MaxNoOfLocalScans
       </a>
      </code>
      :
            Maximum number of fragment scans in parallel on this data
            node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofopenfiles">
        MaxNoOfOpenFiles
       </a>
      </code>
      :
            Maximum number of files open per data node.(One thread is
            created per file).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooforderedindexes">
        MaxNoOfOrderedIndexes
       </a>
      </code>
      :
            Total number of ordered indexes that can be defined in
            system.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofsavedmessages">
        MaxNoOfSavedMessages
       </a>
      </code>
      :
            Maximum number of error messages to write in error log and
            maximum number of trace files to retain.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofsubscribers">
        MaxNoOfSubscribers
       </a>
      </code>
      :
            Maximum number of subscribers.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofsubscriptions">
        MaxNoOfSubscriptions
       </a>
      </code>
      :
            Maximum number of subscriptions (default 0 = MaxNoOfTables).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooftables">
        MaxNoOfTables
       </a>
      </code>
      :
            Suggests total number of NDB tables stored in database.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnooftriggers">
        MaxNoOfTriggers
       </a>
      </code>
      :
            Total number of triggers that can be defined in system.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxnoofuniquehashindexes">
        MaxNoOfUniqueHashIndexes
       </a>
      </code>
      :
            Total number of unique hash indexes that can be defined in
            system.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxparallelcopyinstances">
        MaxParallelCopyInstances
       </a>
      </code>
      :
            Number of parallel copies during node restarts. Default is
            0, which uses number of LDMs on both nodes, to maximum of
            16.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxparallelscansperfragment">
        MaxParallelScansPerFragment
       </a>
      </code>
      :
            Maximum number of parallel scans per fragment. Once this
            limit is reached, scans are serialized.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxreorgbuildbatchsize">
        MaxReorgBuildBatchSize
       </a>
      </code>
      :
            Maximum scan batch size to use for reorganization of table
            partitions. Increasing this value may speed up table
            partition reorganization but impacts ongoing traffic as
            well.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxstartfailretries">
        MaxStartFailRetries
       </a>
      </code>
      :
            Maximum retries when data node fails on startup, requires
            StopOnError = 0. Setting to 0 causes start attempts to
            continue indefinitely.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-maxuibuildbatchsize">
        MaxUIBuildBatchSize
       </a>
      </code>
      :
            Maximum scan batch size to use for building unique keys.
            Increasing this value may speed up builds of unique keys but
            impacts ongoing traffic as well.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-memreportfrequency">
        MemReportFrequency
       </a>
      </code>
      :
            Frequency of memory reports in seconds; 0 = report only when
            exceeding percentage limits.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-mindiskwritespeed">
        MinDiskWriteSpeed
       </a>
      </code>
      :
            Minimum number of bytes per second that can be written by
            LCP and backup.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-minfreepct" title="MinFreePct">
        MinFreePct
       </a>
      </code>
      :
            Percentage of memory resources to keep in reserve for
            restarts.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-nodegroup">
        NodeGroup
       </a>
      </code>
      :
            Node group to which data node belongs; used only during
            initial start of cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-nodegrouptransporters">
        NodeGroupTransporters
       </a>
      </code>
      :
            Number of transporters to use between nodes in same node
            group.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-nodeid">
        NodeId
       </a>
      </code>
      :
            Number uniquely identifying data node among all nodes in
            cluster.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-nooffragmentlogfiles">
        NoOfFragmentLogFiles
       </a>
      </code>
      :
            Number of 16 MB redo log files in each of 4 file sets
            belonging to data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-noofreplicas">
        NoOfReplicas
       </a>
      </code>
      :
            Number of copies of all data in database.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-numa">
        Numa
       </a>
      </code>
      :
            (Linux only; requires libnuma) Controls NUMA support.
            Setting to 0 permits system to determine use of interleaving
            by data node process; 1 means that it is determined by data
            node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-odirect">
        ODirect
       </a>
      </code>
      :
            Use O_DIRECT file reads and writes when possible.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-odirectsyncflag">
        ODirectSyncFlag
       </a>
      </code>
      :
            O_DIRECT writes are treated as synchronized writes; ignored
            when ODirect is not enabled, InitFragmentLogFiles is set to
            SPARSE, or both.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-realtimescheduler">
        RealtimeScheduler
       </a>
      </code>
      :
            When true, data node threads are scheduled as real-time
            threads. Default is false.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-recoverywork">
        RecoveryWork
       </a>
      </code>
      :
            Percentage of storage overhead for LCP files: greater value
            means less work in normal operations, more work during
            recovery.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-redobuffer">
        RedoBuffer
       </a>
      </code>
      :
            Number of bytes on each data node allocated for writing redo
            logs.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-redoovercommitcounter">
        RedoOverCommitCounter
       </a>
      </code>
      :
            When RedoOverCommitLimit has been exceeded this many times,
            transactions are aborted, and operations are handled as
            specified by DefaultOperationRedoProblemAction.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-redoovercommitlimit">
        RedoOverCommitLimit
       </a>
      </code>
      :
            Each time that flushing current redo buffer takes longer
            than this many seconds, number of times that this has
            happened is compared to RedoOverCommitCounter.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-requireencryptedbackup">
        RequireEncryptedBackup
       </a>
      </code>
      :
            Whether backups must be encrypted (1 = encryption required,
            otherwise 0).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-requirecertificate">
        RequireCertificate
       </a>
      </code>
      :
            Node is required to find key and certificate in TLS search
            path.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-requiretls">
        RequireTls
       </a>
      </code>
      :
            Require TLS-authenticated secure connections.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedconcurrentindexoperations">
        ReservedConcurrentIndexOperations
       </a>
      </code>
      :
            Number of simultaneous index operations having dedicated
            resources on one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedconcurrentoperations">
        ReservedConcurrentOperations
       </a>
      </code>
      :
            Number of simultaneous operations having dedicated resources
            in transaction coordinators on one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedconcurrentscans">
        ReservedConcurrentScans
       </a>
      </code>
      :
            Number of simultaneous scans having dedicated resources on
            one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedconcurrenttransactions">
        ReservedConcurrentTransactions
       </a>
      </code>
      :
            Number of simultaneous transactions having dedicated
            resources on one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedfiredtriggers">
        ReservedFiredTriggers
       </a>
      </code>
      :
            Number of triggers having dedicated resources on one data
            node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedlocalscans">
        ReservedLocalScans
       </a>
      </code>
      :
            Number of simultaneous fragment scans having dedicated
            resources on one data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-reservedtransactionbuffermemory">
        ReservedTransactionBufferMemory
       </a>
      </code>
      :
            Dynamic buffer space (in bytes) for key and attribute data
            allocated to each data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-restartonerrorinsert">
        RestartOnErrorInsert
       </a>
      </code>
      :
            Control type of restart caused by inserting error (when
            StopOnError is enabled).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-restartsubscriberconnecttimeout">
        RestartSubscriberConnectTimeout
       </a>
      </code>
      :
            Amount of time for data node to wait for subscribing API
            nodes to connect. Set to 0 to disable timeout, which is
            always resolved to nearest full second.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-schedulerexecutiontimer">
        SchedulerExecutionTimer
       </a>
      </code>
      :
            Number of microseconds to execute in scheduler before
            sending.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-schedulerresponsiveness">
        SchedulerResponsiveness
       </a>
      </code>
      :
            Set NDB scheduler response optimization 0-10; higher values
            provide better response time but lower throughput.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-schedulerspintimer">
        SchedulerSpinTimer
       </a>
      </code>
      :
            Number of microseconds to execute in scheduler before
            sleeping.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-serverport">
        ServerPort
       </a>
      </code>
      :
            Port used to set up transporter for incoming connections
            from API nodes.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-sharedglobalmemory">
        SharedGlobalMemory
       </a>
      </code>
      :
            Total number of bytes on each data node allocated for any
            use.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-spinmethod">
        SpinMethod
       </a>
      </code>
      :
            Determines spin method used by data node; see documentation
            for details.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startfailretrydelay">
        StartFailRetryDelay
       </a>
      </code>
      :
            Delay in seconds after start failure prior to retry;
            requires StopOnError = 0.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startfailuretimeout">
        StartFailureTimeout
       </a>
      </code>
      :
            Milliseconds to wait before terminating. (0=Wait forever).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startnonodegrouptimeout">
        StartNoNodeGroupTimeout
       </a>
      </code>
      :
            Time to wait for nodes without nodegroup before trying to
            start (0=forever).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startpartialtimeout">
        StartPartialTimeout
       </a>
      </code>
      :
            Milliseconds to wait before trying to start without all
            nodes. (0=Wait forever).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startpartitionedtimeout">
        StartPartitionedTimeout
       </a>
      </code>
      :
            Milliseconds to wait before trying to start partitioned.
            (0=Wait forever).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-startupstatusreportfrequency">
        StartupStatusReportFrequency
       </a>
      </code>
      :
            Frequency of status reports during startup.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-stoponerror">
        StopOnError
       </a>
      </code>
      :
            When set to 0, data node automatically restarts and recovers
            following node failures.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-stringmemory">
        StringMemory
       </a>
      </code>
      :
            Default size of string memory (0 to 100 = % of maximum, 101+
            = actual bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-tcpbind_inaddr_any">
        TcpBind_INADDR_ANY
       </a>
      </code>
      :
            Bind IP_ADDR_ANY so that connections can be made from
            anywhere (for autogenerated connections).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenepochs">
        TimeBetweenEpochs
       </a>
      </code>
      :
            Time between epochs (synchronization used for replication).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenepochstimeout">
        TimeBetweenEpochsTimeout
       </a>
      </code>
      :
            Timeout for time between epochs. Exceeding causes node
            shutdown.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenglobalcheckpoints">
        TimeBetweenGlobalCheckpoints
       </a>
      </code>
      :
            Time between group commits of transactions to disk.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenglobalcheckpointstimeout">
        TimeBetweenGlobalCheckpointsTimeout
       </a>
      </code>
      :
            Minimum timeout for group commit of transactions to disk.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweeninactivetransactionabortcheck">
        TimeBetweenInactiveTransactionAbortCheck
       </a>
      </code>
      :
            Time between checks for inactive transactions.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenlocalcheckpoints">
        TimeBetweenLocalCheckpoints
       </a>
      </code>
      :
            Time between taking snapshots of database (expressed in
            base-2 logarithm of bytes).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenwatchdogcheck">
        TimeBetweenWatchDogCheck
       </a>
      </code>
      :
            Time between execution checks inside data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-timebetweenwatchdogcheckinitial">
        TimeBetweenWatchDogCheckInitial
       </a>
      </code>
      :
            Time between execution checks inside data node (early start
            phases when memory is allocated).
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-totalsendbuffermemory">
        TotalSendBufferMemory
       </a>
      </code>
      :
            Total memory to use for all transporter send buffers..
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-transactionbuffermemory">
        TransactionBufferMemory
       </a>
      </code>
      :
            Dynamic buffer space (in bytes) for key and attribute data
            allocated for each data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-transactiondeadlockdetectiontimeout">
        TransactionDeadlockDetectionTimeout
       </a>
      </code>
      :
            Time transaction can spend executing within data node. This
            is time that transaction coordinator waits for each data
            node participating in transaction to execute request. If
            data node takes more than this amount of time, transaction
            is aborted.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-transactioninactivetimeout">
        TransactionInactiveTimeout
       </a>
      </code>
      :
            Milliseconds that application waits before executing another
            part of transaction. This is time transaction coordinator
            waits for application to execute or send another part
            (query, statement) of transaction. If application takes too
            much time, then transaction is aborted. Timeout = 0 means
            that application never times out.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-transactionmemory">
        TransactionMemory
       </a>
      </code>
      :
            Memory allocated for transactions on each data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-twopassinitialnoderestartcopy">
        TwoPassInitialNodeRestartCopy
       </a>
      </code>
      :
            Copy data in 2 passes during initial node restart, which
            enables multithreaded building of ordered indexes for such
            restarts.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-undodatabuffer">
        UndoDataBuffer
       </a>
      </code>
      :
            Unused; has no effect.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-undoindexbuffer">
        UndoIndexBuffer
       </a>
      </code>
      :
            Unused; has no effect.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-useshm">
        UseShm
       </a>
      </code>
      :
            Use shared memory connections between this data node and API
            node also running on this host.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbd-watchdogimmediatekill">
        WatchDogImmediateKill
       </a>
      </code>
      :
            When true, threads are immediately killed whenever watchdog
            issues occur; used for testing and debugging.
     </p>
    </li>
   </ul>
  </div>
  <p>
   The following parameters are specific to
   <a class="link" href="mysql-cluster-programs-ndbmtd.html" title="25.5.3 ndbmtd — The NDB Cluster Data Node Daemon (Multi-Threaded)">
    <span class="command">
     <strong>
      ndbmtd
     </strong>
    </span>
   </a>
   :
  </p>
  <div class="itemizedlist">
   <a name="ndbparam-summary-list-ndbmtd">
   </a>
   <ul class="itemizedlist" style="list-style-type: disc; ">
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-automaticthreadconfig">
        AutomaticThreadConfig
       </a>
      </code>
      :
            Use automatic thread configuration; overrides any settings
            for ThreadConfig and MaxNoOfExecutionThreads, and disables
            ClassicFragmentation.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-classicfragmentation">
        ClassicFragmentation
       </a>
      </code>
      :
            When true, use traditional table fragmentation; set false to
            enable flexible distribution of fragments among LDMs.
            Disabled by AutomaticThreadConfig.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-enablemultithreadedbackup">
        EnableMultithreadedBackup
       </a>
      </code>
      :
            Enable multi-threaded backup.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-maxnoofexecutionthreads">
        MaxNoOfExecutionThreads
       </a>
      </code>
      :
            For ndbmtd only, specify maximum number of execution
            threads.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-maxsenddelay">
        MaxSendDelay
       </a>
      </code>
      :
            Maximum number of microseconds to delay sending by ndbmtd.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-nooffragmentlogparts">
        NoOfFragmentLogParts
       </a>
      </code>
      :
            Number of redo log file groups belonging to this data node.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-numcpus">
        NumCPUs
       </a>
      </code>
      :
            Specify number of CPUs to use with AutomaticThreadConfig.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-partitionspernode">
        PartitionsPerNode
       </a>
      </code>
      :
            Determines the number of table partitions created on each
            data node; not used if ClassicFragmentation is enabled.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       <a class="link" href="mysql-cluster-ndbd-definition.html#ndbparam-ndbmtd-threadconfig">
        ThreadConfig
       </a>
      </code>
      :
            Used for configuration of multithreaded data nodes (ndbmtd).
            Default is empty string; see documentation for syntax and
            other information.
     </p>
    </li>
   </ul>
  </div>
 </div>
 <br/>
</div>
