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Posted to issues@trafficserver.apache.org by "Brian Geffon (JIRA)" <ji...@apache.org> on 2013/01/30 20:35:12 UTC

[jira] [Created] (TS-1674) TSStatInDecrement is broken

Brian Geffon created TS-1674:
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             Summary: TSStatInDecrement 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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