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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5786) Implement histogram metrics for flush and compaction latencies and sizes.
Date Mon, 09 Jul 2012 20:25:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13409812#comment-13409812
] 

Elliott Clark commented on HBASE-5786:
--------------------------------------

Yes Ted it is deprecated.  However right now it's the best that we have. I have other jira's
that have metrics2 implementations.  However I don't think that it's appropriate to expect
a first time contributor to make all of those changes before adding a smaller fix.  When we
move all of our implementation over to metrics2 MetricsHistogram will have to be addressed
there too.
                
> Implement histogram metrics for flush and compaction latencies and sizes.
> -------------------------------------------------------------------------
>
>                 Key: HBASE-5786
>                 URL: https://issues.apache.org/jira/browse/HBASE-5786
>             Project: HBase
>          Issue Type: New Feature
>          Components: metrics, regionserver
>    Affects Versions: 0.92.2, 0.94.0, 0.96.0
>            Reporter: Jonathan Hsieh
>
> Average time for region operations doesn't really tell a useful story when that help
diagnose anomalous conditions.
> It would be extremely useful to add histogramming metrics similar to HBASE-5533 for region
operations like flush, compaction and splitting.  The probably should be forward biased at
a much coarser granularity however (maybe decay every day?) 

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