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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-1342) A configurable limit on the number of unique values should be set on the UniqueValueCount and ValueHistogram aggregators
Date Fri, 11 May 2007 20:58:15 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-1342:
---------------------------------

    Fix Version/s: 0.14.0
           Status: Open  (was: Patch Available)

I'm not sure what's changed, but this no longer passes unit tests against trunk.

Testcase: testAggregates took 1.59 sec
        FAILED
expected:<...5...> but was:<...9...>



> A configurable limit on the number of unique values should be set on the UniqueValueCount
and ValueHistogram aggregators
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1342
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1342
>             Project: Hadoop
>          Issue Type: Improvement
>            Reporter: Runping Qi
>         Assigned To: Runping Qi
>             Fix For: 0.14.0
>
>         Attachments: patch-1342.txt
>
>
> In the current implementation, the uniq number of values may increase unbounded, causing
out of memory eventually.

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