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Posted to issues@trafficserver.apache.org by "Brian Geffon (JIRA)" <ji...@apache.org> on 2013/01/30 20:39:12 UTC

[jira] [Updated] (TS-1674) TSStatIntDecrement is broken

     [ https://issues.apache.org/jira/browse/TS-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Geffon updated TS-1674:
-----------------------------

    Summary: TSStatIntDecrement is broken  (was: TSStatInDecrement is broken)
    
> TSStatIntDecrement is broken
> ----------------------------
>
>                 Key: TS-1674
>                 URL: https://issues.apache.org/jira/browse/TS-1674
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: TS API
>            Reporter: Brian Geffon
>
> ATS keeps a thread-local copy of the stat value and aggregates it periodically and on demand when stats are being collected. However the decrement function doesn't let a value go negative. So in a thread that has not incremented this stat previously, the decrement call "fails". This negative value check is logically flawed as it doesn't account for the per-thread distribution of the stats.

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