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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11516) Track time spent in executing coprocessors in each region.
Date Wed, 16 Jul 2014 19:18:06 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14063949#comment-14063949
] 

Andrew Purtell commented on HBASE-11516:
----------------------------------------

Why not track coprocessor upcall latency the same way we track HFile read and write op latencies?
Start with HFile.java, look for the 'LATENCY_BUFFER_SIZE' constant, surrounding members and
methods, and related code. 

> Track time spent in executing coprocessors in each region.
> ----------------------------------------------------------
>
>                 Key: HBASE-11516
>                 URL: https://issues.apache.org/jira/browse/HBASE-11516
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>    Affects Versions: 0.98.4
>            Reporter: Srikanth Srungarapu
>            Assignee: Srikanth Srungarapu
>            Priority: Minor
>             Fix For: 0.98.5
>
>         Attachments: HBASE-11516.patch, HBASE-11516_v2.patch
>
>
> Currently, the time spent in executing coprocessors is not yet being tracked. This feature
can be handy for debugging coprocessors in case of any trouble.



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