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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19344) improve asyncWAL by using Independent thread for netty #IO in FanOutOneBlockAsyncDFSOutput
Date Mon, 27 Nov 2017 02:40:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16266315#comment-16266315
] 

Duo Zhang commented on HBASE-19344:
-----------------------------------

More protections are always welcomed. But you need to find a proper way to do it without making
the code too ugly since it does not effect correctness...

Thanks.

> improve asyncWAL by using Independent thread for netty #IO in FanOutOneBlockAsyncDFSOutput

> -------------------------------------------------------------------------------------------
>
>                 Key: HBASE-19344
>                 URL: https://issues.apache.org/jira/browse/HBASE-19344
>             Project: HBase
>          Issue Type: Sub-task
>          Components: wal
>    Affects Versions: 2.0.0-beta-1
>            Reporter: Chance Li
>            Assignee: Chance Li
>             Fix For: 2.0.0
>
>         Attachments: HBASE-19344-branch2.patch, HBASE-19344-branch2.patch.2.POC, wal-1-test-result.png,
wal-8-test-result.png, ycsb_result_apache20_async_wal.pdf
>
>
> The logic now is that the netty #IO thread and asyncWal's thread are the same one.
> Improvement proposal:
> 1, Split into two.
> 2, All multiWal share the netty #IO thread pool. 



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