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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3209) New Compaction Heuristic
Date Tue, 09 Nov 2010 23:14:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930347#action_12930347
] 

HBase Review Board commented on HBASE-3209:
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Message from: "Nicolas" <nspiegelberg@facebook.com>

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This is an automatically generated e-mail. To reply, visit:
http://review.cloudera.org/r/1192/
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Review request for hbase.


Summary
-------

We have a whole bunch of compaction awesome in our internal 0.89 branch. Porting this to 0.90:

1) don't unconditionally compact 4 files. have a min threshold
2) intelligently upgrade minors to majors
3) new compaction algo (derived in HBASE-2462 )


This addresses bug HBASE-3209.
    http://issues.apache.org/jira/browse/HBASE-3209


Diffs
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  trunk/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 1033278 

Diff: http://review.cloudera.org/r/1192/diff


Testing
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Has been running on our primary cluster for the past couple weeks.


Thanks,

Nicolas




> New Compaction Heuristic
> ------------------------
>
>                 Key: HBASE-3209
>                 URL: https://issues.apache.org/jira/browse/HBASE-3209
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>
> We have a whole bunch of compaction awesome in our internal 0.89 branch.  Porting this
to 0.90:
> 1) don't unconditionally compact 4 files. have a min threshold
> 2) intelligently upgrade minors to majors
> 3) new compaction algo (derived in HBASE-2462 )

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