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From "John Sichi (JIRA)" <>
Subject [jira] Commented: (HIVE-1470) percentile_approx() fails with more than 1 reducer
Date Mon, 19 Jul 2010 19:17:52 GMT


John Sichi commented on HIVE-1470:

How about 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:
>             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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