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= Apache HBase™ Home

.Welcome to Apache HBase(TM)
link:http://www.apache.org/[Apache HBase(TM)] is the link:http://hadoop.apache.org[Hadoop] database, a distributed, scalable, big data store.

.When Would I Use Apache HBase?
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 link:http://research.google.com/archive/bigtable.html[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.

.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

.Where Can I Get More Information?
See the link:book.html#arch.overview[Architecture Overview], the link:book.html#faq[FAQ] and the other documentation links at the top!

.Export Control
The HBase distribution includes cryptographic software. See the link:export_control.html[export control notice].

== News
Feb 17, 2015:: link:http://www.meetup.com/hbaseusergroup/events/219260093/[HBase meetup around Strata+Hadoop World] in San Jose

January 15th, 2015:: link:http://www.meetup.com/hbaseusergroup/events/218744798/[HBase meetup @ AppDynamics] in San Francisco

November 20th, 2014::  link:http://www.meetup.com/hbaseusergroup/events/205219992/[HBase meetup @ WANdisco] in San Ramon

October 27th, 2014:: link:http://www.meetup.com/hbaseusergroup/events/207386102/[HBase Meetup @ Apple] in Cupertino

October 15th, 2014:: link:http://www.meetup.com/HBase-NYC/events/207655552[HBase Meetup @ Google] on the night before Strata/HW in NYC

September 25th, 2014:: link:http://www.meetup.com/hbaseusergroup/events/203173692/[HBase Meetup @ Continuuity] in Palo Alto

August 28th, 2014:: link:http://www.meetup.com/hbaseusergroup/events/197773762/[HBase Meetup @ Sift Science] in San Francisco

July 17th, 2014:: link:http://www.meetup.com/hbaseusergroup/events/190994082/[HBase Meetup @ HP] in Sunnyvale

June 5th, 2014:: link:http://www.meetup.com/Hadoop-Summit-Community-San-Jose/events/179081342/[HBase BOF at Hadoop Summit], San Jose Convention Center

May 5th, 2014:: link:http://www.hbasecon.com[HBaseCon2014] at the Hilton San Francisco on Union Square

March 12th, 2014:: link:http://www.meetup.com/hbaseusergroup/events/160757912/[HBase Meetup @ Ancestry.com] in San Francisco

View link:old_news.html[Old News]