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    <title>Apache HBase&#153; Home</title>
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  <body>
    <section name="Welcome to Apache HBase&#153;">
        <p><a href="http://www.apache.org/">Apache</a> HBase&#153; is the <a href="http://hadoop.apache.org">Hadoop</a> database, a distributed, scalable, big data store.
    </p>
    <h4>When Would I Use Apache HBase?</h4>
    <p>
    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 <a href="http://research.google.com/archive/bigtable.html">Bigtable: A Distributed Storage System for Structured Data</a> 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.
    </p>
    <h4>Features</h4>
    <p>
<ul>
    <li>Linear and modular scalability.
</li>
    <li>Strictly consistent reads and writes.
</li>
    <li>Automatic and configurable sharding of tables
</li>
    <li>Automatic failover support between RegionServers.
</li>
    <li>Convenient base classes for backing Hadoop MapReduce jobs with Apache HBase tables.
</li>
    <li>Easy to use Java API for client access.
</li>
    <li>Block cache and Bloom Filters for real-time queries.
</li>
    <li>Query predicate push down via server side Filters
</li>
    <li>Thrift gateway and a REST-ful Web service that supports XML, Protobuf, and binary data encoding options
</li>
    <li>Extensible jruby-based (JIRB) shell
</li>
    <li>Support for exporting metrics via the Hadoop metrics subsystem to files or Ganglia; or via JMX
</li>
</ul>
</p>
     <h4>Where Can I Get More Information?</h4>
   <p>See the <a href="http://hbase.apache.org/book/architecture.html#arch.overview">Architecture Overview</a>, the <a href="http://hbase.apache.org/book/faq.html">Apache HBase Reference Guide FAQ</a>,
    and the other documentation links on the left!
   </p>
     <h4>Export Control</h4>
   <p>The HBase distribution includes cryptographic software. See the export control notice <a href="export_control.html">here</a>
   </p>
 </section>
     <section name="News">
         <p>May 5th, 2014 <a href="http://www.hbasecon.com">HBaseCon2014</a> at the Hilton San Francisco on Union Square</p>
         <p>March 12th, 2014 <a href="http://www.meetup.com/hbaseusergroup/events/160757912/">HBase Meetup @ Ancestry.com</a> in San Francisco</p>
         <p>February 10th, 2014 <a href="http://www.meetup.com/hbaseusergroup/events/163139322/">HBase Meetup @ Continuuity</a> in Palo Alto</p>
         <p>January 30th, 2014 <a href="http://www.meetup.com/hbaseusergroup/events/158491762/">HBase Meetup @ Apple</a> in Cupertino</p>
         <p>January 30th, 2014 <a href="http://www.meetup.com/Los-Angeles-HBase-User-group/events/160560282/">Los Angeles HBase User Group</a> in El Segundo</p>
      <p><small><a href="old_news.html">Old News</a></small></p>
    </section>
  </body>

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