Hbase

HBase: Bigtable-like structured storage for Hadoop HDFS

Just as Google's Bigtable leverages the distributed data storage provided by the Google File System, HBase provides Bigtable-like capabilities on top of Hadoop Core. Data is organized into tables, rows and columns. An Iterator-like interface is available for scanning through a row range (and of course there is the ability to retrieve a column value for a specific key). Any particular column may have multiple versions for the same row key.

General Information

• HBase Home Page -- hbase.org

• HBase Architecture -- (updated 2008/09/05)

• FAQ and Troubleshooting

• Support:

  • HBase Mailing Lists See also the Hadoop Mailing Lists

  • HBase IRC Channel

• HBase news, presentations, articles, and the Unofficial Blog

• PoweredBy, a list of sites and applications powered by HBase

• SupportingProjects

User Documentation

• Getting Started

• How to download and run hbase in about 10 Minutes.

• HBase API Docs

• The HBase/Bigtable Data Model

• HBase Shell -- New in 0.2.0, replaces HQL

• JRuby interface to HBase -- obsoleted by the new shell

• Jython interface to HBase

• Groovy DSL for HBase

• REST gateway specification for HBase

• Thrift gateway specification for HBase

• Ruby client for Hbase's REST API

• Using HBase with Hadoop MapReduce

• HBase/Zookeeper integration documentation

• Using Bloom Filters

• HBase and Performance

  • Tools for evaluating HBase performance and scalability

    • There are setup instructions and a JMeter Test Plan in HADOOP-2625

  • A performance evaluation of HBase

• Migrating between HBase versions

  • Migration from one version of HBase to another

  • API changes

  • Design of the Migration system

Developer Documentation

• Roadmaps

• How to contribute

• How to commit

• How to release

• How to rate the priority of your issues in JIRA

• Discussion of new file format

Design Documents

• HRegionServer locking

• Column caching