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https://issues.apache.org/jira/browse/HIVE-1470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889981#action_12889981
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John Sichi commented on HIVE-1470:
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How about this..post an updated patch which includes the test case, setting the
number of reducers explicitly. It will be ignored for now (so the test
coverage won't actually be there yet), but I'll add a note on HIVE-117 that
this is a test that needs to start running in minimr mode once HIVE-117 is
fixed.
> percentile_approx() fails with more than 1 reducer
> --------------------------------------------------
>
> Key: HIVE-1470
> URL: https://issues.apache.org/jira/browse/HIVE-1470
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.6.0
> Reporter: Mayank Lahiri
> Assignee: Mayank Lahiri
> Fix For: 0.7.0
>
> Attachments: HIVE-1470.1.patch
>
>
> The larger issue is that a UDAF that has variable return types needs two
> inner Evaluator classes. This patch fixes a NullPointerException bug that is
> only encountered when partial aggregations are invoked.
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