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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6466) Enable multi-thread for memstore flush
Date Sat, 28 Jul 2012 17:41:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424389#comment-13424389
] 

Jean-Daniel Cryans commented on HBASE-6466:
-------------------------------------------

bq. This doesn't explain the performance gain

So please explain to me where you're trying to get to with this pasted code... the flushes
are still serialized, the compactions are done elsewhere, nothing changes as far as I can
tell.
                
> 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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