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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13021) GenericUDAFEvaluator.isEstimable(agg) always returns false
Date Sat, 20 Feb 2016 03:41:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15155355#comment-15155355
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Gopal V commented on HIVE-13021:
--------------------------------

Yes, but the failure looks like it's not from a query at all.

{code}
Begin query: stats_only_null.q
Exception: Client Execution failed with error code = 40000 running 
analyze table stats_null_part compute statistics for columns
{code}

The exception being thrown before a query kicks in?

> GenericUDAFEvaluator.isEstimable(agg) always returns false
> ----------------------------------------------------------
>
>                 Key: HIVE-13021
>                 URL: https://issues.apache.org/jira/browse/HIVE-13021
>             Project: Hive
>          Issue Type: Bug
>          Components: UDF
>    Affects Versions: 1.2.1
>            Reporter: Sergey Zadoroshnyak
>            Assignee: Gopal V
>            Priority: Critical
>              Labels: Performance
>             Fix For: 1.3.0, 2.1.0
>
>         Attachments: HIVE-13021.1.patch
>
>
> GenericUDAFEvaluator.isEstimable(agg) always returns false, because annotation AggregationType
has default RetentionPolicy.CLASS and cannot be retained by the VM at run time.
> As result estimate method will never be executed.



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