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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1342) A configurable limit on the number of unique values should be set on the UniqueValueCount and ValueHistogram aggregators
Date Tue, 15 May 2007 11:30:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12495962
] 

Hadoop QA commented on HADOOP-1342:
-----------------------------------

Integrated in Hadoop-Nightly #89 (See http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/89/)

> 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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