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Posted to dev@hbase.apache.org by "Vladimir Rodionov (JIRA)" <ji...@apache.org> on 2015/09/27 06:20:04 UTC

[jira] [Created] (HBASE-14496) Compaction improvements: delayed compaction

Vladimir Rodionov created HBASE-14496:
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             Summary: Compaction improvements: delayed compaction
                 Key: HBASE-14496
                 URL: https://issues.apache.org/jira/browse/HBASE-14496
             Project: HBase
          Issue Type: New Feature
            Reporter: Vladimir Rodionov
            Assignee: Vladimir Rodionov


Delayed compaction feature allows to specify maximum compaction delay for newly created store files. Files will be eligible for compaction only if their age exceeds this delay. This will allow to preserve new data in a block cache. For most applications, the newer the data the more frequently is accessed. The frequent compactions of new store files result in high block cache churn rate and affects read performance and read latencies badly. 

The configuration will be global, per table, per column family.



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