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https://issues.apache.org/jira/browse/HBASE-3877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276346#comment-13276346
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Hudson commented on HBASE-3877:
-------------------------------
Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #5 (See
[https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/5/])
[HBASE-5867] Improve Compaction Throttle Default
Summary:
We recently had a production issue where our compactions fell
behind because our compaction throttle was improperly tuned and
accidentally upgraded all compactions to the large pool. The default
from HBASE-3877 makes 1 bad assumption: the default number of flushed
files in a compaction. MinFilesToCompact should be taken into
consideration. As a default, it is less damaging for the large thread
to be slightly higher than it needs to be and only get timed-majors
versus having everything accidentally promoted.
Test Plan: - mvn test
Reviewers: JIRA, Kannan, Liyin
Reviewed By: Kannan
CC: stack
Differential Revision: https://reviews.facebook.net/D2943 (Revision 1338809)
Result = FAILURE
nspiegelberg :
Files :
*
/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/CompactSplitThread.java
* /hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
> Determine Proper Defaults for Compaction ThreadPools
> ----------------------------------------------------
>
> Key: HBASE-3877
> URL: https://issues.apache.org/jira/browse/HBASE-3877
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.92.0
> Reporter: Nicolas Spiegelberg
> Assignee: Nicolas Spiegelberg
> Priority: Trivial
> Labels: compaction
>
> With the introduction of HBASE-1476, we now have multithreaded compactions +
> 2 different ThreadPools for large and small compactions. However, this is
> disabled by default until we can determine a proper default throttle point.
> Opening this JIRA to log all discussion on how to select a good default for
> this case.
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