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https://issues.apache.org/jira/browse/HBASE-7519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13547265#comment-13547265
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Jimmy Xiang commented on HBASE-7519:
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Here is some details about the leveldb level compaction:
http://leveldb.googlecode.com/svn/trunk/doc/impl.html
Cassandra supports level compaction too:
http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra
http://www.datastax.com/dev/blog/when-to-use-leveled-compaction
> Support level compaction
> ------------------------
>
> Key: HBASE-7519
> URL: https://issues.apache.org/jira/browse/HBASE-7519
> Project: HBase
> Issue Type: New Feature
> Components: Compaction
> Reporter: Jimmy Xiang
>
> The level compaction algorithm may help HBase for some use cases, for
> example, read heavy loads (especially, just one version is used), relative
> small key space updated frequently.
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