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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3160) Compactions: Use more intelligent priorities for PriorityCompactionQueue
Date Thu, 28 Oct 2010 00:36:19 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nicolas Spiegelberg updated HBASE-3160:
---------------------------------------

        Fix Version/s: 0.90.0
    Affects Version/s: 0.90.0
                       0.89.20100924
               Status: Patch Available  (was: Open)

added diff to Review Board

> Compactions: Use more intelligent priorities for PriorityCompactionQueue
> ------------------------------------------------------------------------
>
>                 Key: HBASE-3160
>                 URL: https://issues.apache.org/jira/browse/HBASE-3160
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.89.20100924, 0.90.0
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>             Fix For: 0.90.0
>
>
> One of the problems with the current compaction queue is that we have a very low granularity
on the importance of the various compactions in the queue.  If a StoreFile count exceeds 15
files, only then do we bump via enum change.  We should instead look into more intelligent,
granular priority metrics for choosing the next compaction.  

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