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https://issues.apache.org/jira/browse/HIVE-13108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15178497#comment-15178497
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Gopal V commented on HIVE-13108:
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Nobody has reported this issue yet, but it is a low-risk change for a problem
which is nearly impossible to detect.
> Operators: SORT BY randomness is not safe with network partitions
> -----------------------------------------------------------------
>
> Key: HIVE-13108
> URL: https://issues.apache.org/jira/browse/HIVE-13108
> Project: Hive
> Issue Type: Bug
> Components: Spark, Tez
> Affects Versions: 1.3.0, 1.2.1, 2.0.0, 2.0.1
> Reporter: Gopal V
> Assignee: Gopal V
> Fix For: 1.3.0, 2.1.0
>
> Attachments: HIVE-13108.1.patch
>
>
> SORT BY relies on a transient Random object, which is initialized once per
> deserialize operation.
> This results in complications during a network partition and when Tez/Spark
> reuses a cached plan.
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