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https://issues.apache.org/jira/browse/HBASE-9736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13831072#comment-13831072
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Hudson commented on HBASE-9736:
-------------------------------
SUCCESS: Integrated in HBase-TRUNK-on-Hadoop-2.0.0 #850 (See
[https://builds.apache.org/job/HBase-TRUNK-on-Hadoop-2.0.0/850/])
HBASE-9736: Allow more than one log splitter per RS (jeffreyz: rev 1545052)
*
/hbase/trunk/hbase-client/src/main/java/org/apache/hadoop/hbase/executor/EventType.java
*
/hbase/trunk/hbase-client/src/main/java/org/apache/hadoop/hbase/executor/ExecutorType.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SplitLogWorker.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/HLogSplitterHandler.java
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/HLogSplitter.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestDistributedLogSplitting.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestSplitLogWorker.java
> Alow more than one log splitter per RS
> --------------------------------------
>
> Key: HBASE-9736
> URL: https://issues.apache.org/jira/browse/HBASE-9736
> Project: HBase
> Issue Type: Improvement
> Components: MTTR
> Reporter: stack
> Assignee: Jeffrey Zhong
> Priority: Critical
> Attachments: hbase-9736.patch
>
>
> IIRC, this is an idea that came from the lads at Xiaomi.
> I have a small cluster of 6 RSs and one went down. It had a few WALs. I see
> this in logs:
> 2013-10-09 05:47:27,890 DEBUG org.apache.hadoop.hbase.master.SplitLogManager:
> total tasks = 25 unassigned = 21
> WAL splitting is held up for want of slots out on the cluster to split WALs.
> We need to be careful we don't overwhelm the foreground regionservers but
> more splitters should help get all back online faster.
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