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From "Lars Hofhansl (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5541) Avoid holding the rowlock during HLog sync in HRegion.mutateRowWithLocks
Date Fri, 09 Mar 2012 00:39:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13225725#comment-13225725
] 

Lars Hofhansl commented on HBASE-5541:
--------------------------------------

I'll wait for an official +1.
                
> Avoid holding the rowlock during HLog sync in HRegion.mutateRowWithLocks
> ------------------------------------------------------------------------
>
>                 Key: HBASE-5541
>                 URL: https://issues.apache.org/jira/browse/HBASE-5541
>             Project: HBase
>          Issue Type: Sub-task
>          Components: client, regionserver
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.94.0
>
>         Attachments: 5541.txt
>
>
> Currently mutateRowsWithLocks holds the row lock while the HLog is sync'ed.
> Similar to what we do in doMiniBatchPut, we should create the log entry with the lock
held, but only sync the HLog after the lock is released, along with rollback logic in case
the sync'ing fails.

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