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https://issues.apache.org/jira/browse/HBASE-4028?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054385#comment-13054385
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mingjian commented on HBASE-4028:
---------------------------------
gao, do you fix this problem after move "totalBuffered += incrHeap;" into
"synchronized (dataAvailable)"?
> Hmaster crashes caused by splitting log.
> ----------------------------------------
>
> Key: HBASE-4028
> URL: https://issues.apache.org/jira/browse/HBASE-4028
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.3
> Reporter: gaojinchao
> Assignee: gaojinchao
> Fix For: 0.90.4
>
> Attachments: HBASE-4028-0.90V1.patch, Screenshot-2.png,
> hbase-root-master-157-5-100-8.rar
>
>
> In my performance cluster(0.90.3), The Hmaster memory from 100 M up to 4G
> when one region server crashed.
> I added some print in function doneWriting and found the values of
> totalBuffered is negative.
> 10:29:52,119 WARN org.apache.hadoop.hbase.regionserver.wal.HLogSplitter:
> gjc:release Used -565832
> hbase-root-master-157-5-111-21.log:2011-06-24 10:29:52,119 WARN
> org.apache.hadoop.hbase.regionserver.wal.HLogSplitter: gjc:release Used
> -565832release size25168
> void doneWriting(RegionEntryBuffer buffer) {
> synchronized (this) {
> LOG.warn("gjc1: relase currentlyWriting +biggestBufferKey " +
> buffer.encodedRegionName );
> boolean removed = currentlyWriting.remove(buffer.encodedRegionName);
> assert removed;
> }
> long size = buffer.heapSize();
> synchronized (dataAvailable) {
> totalBuffered -= size;
> LOG.warn("gjc:release Used " + totalBuffered );
> // We may unblock writers
> dataAvailable.notifyAll();
> }
> LOG.warn("gjc:release Used " + totalBuffered + "release size"+ size);
> }
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