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https://issues.apache.org/jira/browse/HBASE-6466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424213#comment-13424213
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Zhihong Ted Yu edited comment on HBASE-6466 at 7/27/12 11:21 PM:
-----------------------------------------------------------------
CompactSplitThread.requestCompaction(final HRegion r, final Store s,
final String why, int priority) has this call (line 225):
{code}
pool.execute(cr);
{code}
which leads to CompactionRequest line 252:
{code}
boolean completed = r.compact(this);
{code}
This doesn't explain the performance gain :-)
was (Author: zhi...@ebaysf.com):
CompactSplitThread.requestCompaction(final HRegion r, final Store s,
final String why, int priority) has this call (line 225):
{code}
pool.execute(cr);
{code}
which leads to CompactionRequest line 252:
{code}
boolean completed = r.compact(this);
{code}
> Enable multi-thread for memstore flush
> --------------------------------------
>
> Key: HBASE-6466
> URL: https://issues.apache.org/jira/browse/HBASE-6466
> Project: HBase
> Issue Type: Improvement
> Reporter: chunhui shen
> Assignee: chunhui shen
> Attachments: HBASE-6466.patch, HBASE-6466v2.patch
>
>
> If the KV is large or Hlog is closed with high-pressure putting, we found
> memstore is often above the high water mark and block the putting.
> So should we enable multi-thread for Memstore Flush?
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