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https://issues.apache.org/jira/browse/HBASE-6134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13285511#comment-13285511
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chunhui shen commented on HBASE-6134:
-------------------------------------

@ram
Through the log, we found writer.close() took about 30ms~50ms.

So, it will took about 20s if there are 400 regions in one hlog file.

                
> Improvement for split-worker to speed up distributed-split-log
> --------------------------------------------------------------
>
>                 Key: HBASE-6134
>                 URL: https://issues.apache.org/jira/browse/HBASE-6134
>             Project: HBase
>          Issue Type: Improvement
>          Components: wal
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.96.0
>
>         Attachments: HBASE-6134.patch
>
>
> First,we do the test between local-master-split and distributed split log
> Environment:34 hlog files, 5 regionservers,(after kill one, only 4 rs do ths 
> splitting work)
> local-master-split:60s+
> distributed-split-log:165s+
> In fact, in our production environment, distributed-split-log also took 60s 
> with 30 regionservers for 34 hlog files (regionserver may be in high load)
> We found split-worker split one log file took about 20s.
> I think we should do the improvement for this.

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