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Posted to issues@hive.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2016/02/20 05:05:18 UTC
[jira] [Commented] (HIVE-13108) Operators: SORT BY randomness is
not safe with network partitions
[ https://issues.apache.org/jira/browse/HIVE-13108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15155369#comment-15155369 ]
Sergey Shelukhin commented on HIVE-13108:
-----------------------------------------
What complications?
> 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
> 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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