" Index data includes min and max values for each column and the row positions within each column (A bit field or bloom filter could also be included.) / present bit stream: is the value non-null? "

yass のブックマーク 2013/09/23 12:37

<blockquote class="hatena-bookmark-comment"><a class="comment-info" href="https://b.hatena.ne.jp/entry/162638182/comment/yass" data-user-id="yass" data-entry-url="https://b.hatena.ne.jp/entry/docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.0.0.2/ds_Hive/orcfile.html" data-original-href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.0.0.2/ds_Hive/orcfile.html" data-entry-favicon="https://cdn-ak2.favicon.st-hatena.com/64?url=http%3A%2F%2Fdocs.hortonworks.com%2FHDPDocuments%2FHDP2%2FHDP-2.0.0.2%2Fds_Hive%2Forcfile.html" data-user-icon="/users/yass/profile.png">Hadoop Hive - ORC Files</a><ul class="comment-tag" style="list-style: none; margin: 0px;"><li style="float: left">[<a href="https://b.hatena.ne.jp/q/ORCFile">ORCFile</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/hive">hive</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/%22columnar%20storage%22">columnar storage</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/%22bloom%20filter%22">bloom filter</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/vbyte">vbyte</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/%22zigzag%20encoding%22">zigzag encoding</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/RLE">RLE</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/integer">integer</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/snappy">snappy</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/%22dictionary%20encoding%22">dictionary encoding</a>]</li></ul><br><p style="clear: left">&quot; Index data includes min and max values for each column and the row positions within each column (A bit field or bloom filter could also be included.) / present bit stream: is the value non-null? &quot;</p><a class="datetime" href="https://b.hatena.ne.jp/yass/20130923#bookmark-162638182"><span class="datetime-body">2013/09/23 12:37</span></a></blockquote><script src="https://b.st-hatena.com/js/comment-widget.js" charset="utf-8" async></script>

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Hadoop Hive - ORC Files

docs.hortonworks.com2013/09/23

ORC File Format File Structure Stripe Structure HiveQLSyntax Serialization and Compression Integer Column Serialization String Column Serialization Compression ORC File Format The Optimized Row Col...

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