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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12750) Vectorization logic not maintaining noNulls flag and isNull array properly causing wrong query results
Date Sat, 26 Dec 2015 07:07:49 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071828#comment-15071828
] 

Matt McCline commented on HIVE-12750:
-------------------------------------

Validation that there are no true flags in isNull in a ColumnVector when noNulls is true found
2 problems: ConstantVectorExpression.evaluate and TreeReader.nextVector -- the 2nd one solved
the wrong results problem.

All other changes are validation calls under Google Preconditions.

> Vectorization logic not maintaining noNulls flag and isNull array properly causing wrong
query results
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-12750
>                 URL: https://issues.apache.org/jira/browse/HIVE-12750
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>         Attachments: HIVE-12750.1.patch, HIVE-12750.2.patch, HIVE-12750.3.patch
>
>
> A very large query produced wrong results due to not maintaining noNulls flag and isNull
array properly.  No Q file since input files too large.



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