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Posted to issues@hbase.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2020/09/11 05:54:00 UTC

[jira] [Commented] (HBASE-24962) Optimize BufferNode Lock

    [ https://issues.apache.org/jira/browse/HBASE-24962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17194011#comment-17194011 ] 

Duo Zhang commented on HBASE-24962:
-----------------------------------

Do we have any number about the performance impact of synchronized? Is it the bottleneck here?

> Optimize BufferNode Lock
> ------------------------
>
>                 Key: HBASE-24962
>                 URL: https://issues.apache.org/jira/browse/HBASE-24962
>             Project: HBase
>          Issue Type: Bug
>          Components: MTTR
>    Affects Versions: 3.0.0-alpha-1, 2.2.3
>            Reporter: Bo Cui
>            Assignee: Bo Cui
>            Priority: Major
>
> [https://github.com/apache/hbase/blob/047e0618d290a09a4a269b00548fe17691e31787/hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/RemoteProcedureDispatcher.java#L373]
> during startup, a large number of OpenRegionProcedures are generated, which are added to the BufferNode. However, the BufferNode has some "synchronized" methods, These methods may affect MTTR



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