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https://issues.apache.org/jira/browse/HIVE-9711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14508084#comment-14508084
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Prasanth Jayachandran commented on HIVE-9711:
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Committed patch to master. Thanks [~gopalv] for the patch!
> ORC Vectorization DoubleColumnVector.isRepeating=false if all entries are NaN
> -----------------------------------------------------------------------------
>
> Key: HIVE-9711
> URL: https://issues.apache.org/jira/browse/HIVE-9711
> Project: Hive
> Issue Type: Bug
> Components: File Formats, Vectorization
> Affects Versions: 1.2.0
> Reporter: Gopal V
> Assignee: Gopal V
> Fix For: 1.2.0
>
> Attachments: HIVE-9711.1.patch, HIVE-9711.2.patch, HIVE-9711.3.patch
>
>
> The isRepeating=true check uses Java equality, which results in NaN != NaN
> comparison operations.
> The noNulls case needs the current check folded into the previous loop, while
> the hasNulls case needs a logical AND of the isNull[] field instead of ==
> comparisons.
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