what are hbase and hive?
604181
Hive and HBase are two different Hadoop based technologies — Hive is an SQL-like engine that runs MapReduce jobs, and HBase is a NoSQL key/value database on Hadoop. ... Just like Google can be used for search and Facebook for social networking, Hive can be used for analytical queries while HBase for real-time querying.
345000
['create new table like output_table in hive.', 'insert into table table name select * from table name.', 'go to hive warehouse in HDFS.', 'find table name you have created in hive.']
979575
['To move the data from one HBase cluster to another, use snapshot and either the clone_snapshot or ExportSnapshot utility; or, use the CopyTable utility.', 'To move the data from one HBase cluster to another without downtime on either cluster, use replication.']
605973
['#1) Apache Hadoop.', '#2) CDH (Cloudera Distribution for Hadoop)', '#3) Cassandra.', '#4) Knime.', '#5) Datawrapper.', '#6) MongoDB.', '#7) Lumify.', '#8) HPCC.']
1233147
select from_unixtime(unix_timestamp('2016/06/01','yyyy/MM/dd'),'yyyy-MM-dd') from table1; where table1 is the table name present in my hive database.
576011
Spring Boot H2 tutorial shows how to work with an embedded H2 in-memory database in a Spring Boot application. A simple RESTful application is created. ... H2 is an open source relational database management system created entirely in Java. It can be embedded in Java applications or run in the client-server mode.
419486
['$ cat /app/hadoop/workspace/horf/hql_in_spark.hql.', 'Now Enter this Launch Command in your shell:']
251097
HBase Tables are divided horizontally by row key range into “Regions.” A region contains all rows in the table between the region's start key and end key. Regions are assigned to the nodes in the cluster, called “Region Servers,” and these serve data for reads and writes.
965293
Hive and Pig relies on MapReduce framework for distributed processing. But MapReduce is Batch Oriented. So it is not suitable for interactive queries. ... Tez is prominent over map reduce by using hadoop containers efficiently, multiple reduce phases without map phases and effective use of HDFS.
1150623
User Defined Functions, also known as UDF, allow you to create custom functions to process records or groups of records. Hive comes with a comprehensive library of functions. There are however some omissions, and some specific cases for which UDFs are the solution.
503407
Hive tables are stored in the Hive warehouse directory. By default, MapR configures the Hive warehouse directory to be /user/hive/warehouse under the root volume. This default is defined in the $HIVE_HOME/conf/hive-default.
1462711
All HBase data is stored in HDFS files. Region Servers are collocated with the HDFS DataNodes, which enable data locality (putting the data close to where it is needed) for the data served by the RegionServers. HBase data is local when it is written, but when a region is moved, it is not local until compaction.
680469
Azure HDInsight is a managed Apache Hadoop service that lets you run Apache Spark, Apache Hive, Apache Kafka, Apache HBase, and more in the cloud.
1369674
Apache Hive might not be ideal for interactive computing whereas Impala is meant for interactive computing. Hive is batch based Hadoop MapReduce whereas Impala is more like MPP database. Hive supports complex types but Impala does not. Apache Hive is fault tolerant whereas Impala does not support fault tolerance.
775175
['Amazon Redshift.', 'Microsoft Azure.', 'Google BigQuery.', 'Snowflake.', 'Micro Focus Vertica.', 'Teradata.', 'Amazon DynamoDB.', 'PostgreSQL.']
290808
H2 is one of the popular in-memory databases written in Java. It can be embedded in Java applications or run in the client-server mode. Spring Boot provides excellent integration support for H2 using simple properties configuration.
1157725
Sqoop (SQL-to-Hadoop) is a big data tool that offers the capability to extract data from non-Hadoop data stores, transform the data into a form usable by Hadoop, and then load the data into HDFS. This process is called ETL, for Extract, Transform, and Load. ... Like Pig, Sqoop is a command-line interpreter.