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Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2011/05/06 02:12:03 UTC

[jira] [Updated] (HBASE-3862) Race conditions in aggregate calculation

     [ https://issues.apache.org/jira/browse/HBASE-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ted Yu updated HBASE-3862:
--------------------------

    Summary: Race conditions in aggregate calculation  (was: Tace conditions in aggregate calculation)

> Race conditions in aggregate calculation
> ----------------------------------------
>
>                 Key: HBASE-3862
>                 URL: https://issues.apache.org/jira/browse/HBASE-3862
>             Project: HBase
>          Issue Type: Bug
>          Components: coprocessors
>    Affects Versions: 0.92.0
>            Reporter: John Heitmann
>         Attachments: coprocessor_race.patch
>
>
> The AggregationClient requests aggregations from multiple region servers in parallel. The calculations in the reducer callbacks of the AggregationClient are not thread safe, and therefore could return an incorrect result due to simultaneous/interleaved execution.

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