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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3160) Compactions: Use more intelligent priorities for PriorityCompactionQueue
Date Fri, 29 Oct 2010 05:47:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12926178#action_12926178

HBase Review Board commented on HBASE-3160:

Message from: stack@duboce.net

bq.  On 2010-10-28 22:04:28, Ted Yu wrote:
bq.  > trunk/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java, line 3258
bq.  > <http://review.cloudera.org/r/1103/diff/2/?file=16195#file16195line3258>
bq.  >
bq.  >     Seems to be typo here.
bq.  >     Should be: this region should have
bq.  Nicolas wrote:
bq.      will fix

OK... put up a new patch N and I'll commit.

- stack

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> 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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