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Posted to issues@hive.apache.org by "Matt McCline (JIRA)" <ji...@apache.org> on 2017/02/14 05:36:42 UTC

[jira] [Commented] (HIVE-15892) Vectorization: Fast Hash tables need to do bounds checking during expand

    [ https://issues.apache.org/jira/browse/HIVE-15892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15865101#comment-15865101 ] 

Matt McCline commented on HIVE-15892:
-------------------------------------

New error message needs work -- it doesn't prescribe a solution.

Add test?

Also add code for BytesBytesMultiHashMap, too?

> Vectorization: Fast Hash tables need to do bounds checking during expand
> ------------------------------------------------------------------------
>
>                 Key: HIVE-15892
>                 URL: https://issues.apache.org/jira/browse/HIVE-15892
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>
> VectorMapJoinFastLongHashTable line 165 gets NegativeArraySizeException:
> {code}
> long[] newSlotPairs = new long[newSlotPairArraySize];
> {code}
> We need to add a size check... Java math for this wrapped around to negative:
> {code}
> int newSlotPairArraySize = newLogicalHashBucketCount * 2;
> {code}



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