Wed. Aug 12th, 2020

Apache HBase 2.3 releases, distributed database

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Apache HBase™ is the Hadoop database, a distributed, scalable, big data store.

Use Apache HBase™ when you need random, realtime read/write access to your Big Data. This project’s goal is the hosting of very large tables — billions of rows X millions of columns — atop clusters of commodity hardware. Apache HBase is an open-source, distributed, versioned, non-relational database modeled after Google’s Bigtable: A Distributed Storage System for Structured Data by Chang et al. Just as Bigtable leverages the distributed data storage provided by the Google File System, Apache HBase provides Bigtable-like capabilities on top of Hadoop and HDFS.

Apache HBase

Features

  • Linear and modular scalability.
  • Strictly consistent reads and writes.
  • Automatic and configurable sharding of tables
  • Automatic failover support between RegionServers.
  • Convenient base classes for backing Hadoop MapReduce jobs with Apache HBase tables.
  • Easy to use Java API for client access.
  • Block cache and Bloom Filters for real-time queries.
  • Query predicate push down via server side Filters
  • Thrift gateway and a REST-ful Web service that supports XML, Protobuf, and binary data encoding options
  • Extensible jruby-based (JIRB) shell
  • Support for exporting metrics via the Hadoop metrics subsystem to files or Ganglia; or via JMX

Apache HBase 2.0 released.

Changelog

Notable new features include:

  • – Preliminary support for JDK11 (requires Hadoop 3.2.0+, see HBASE-22972)
  • – Hadoop versions increased to 2.10.0 (HBASE-23986) and 3.1.2 (HBASE-22500)
  • – ZooKeeper version increased to 3.5.7 (HBASE-24132)
  • – Lots of improvements around HBCK2
  • – HBase client connections to ZooKeeper are now optional (HBASE-18095)
  • – HBASE-15560 TinyLFU-based BlockCache
  • – HBASE-21874 Bucket cache on Persistent memory
  • – HBASE-23286 Improve MTTR: Split WAL to HFile

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