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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20620) manifest collisions when inserting into bucketed sorted MM tables with dynamic partitioning
Date Fri, 21 Sep 2018 20:40:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16624148#comment-16624148
] 

Sergey Shelukhin commented on HIVE-20620:
-----------------------------------------

[~ashutoshc] can you take a look? a small change.

Unfortunately try as I might I cannot force a local repro of the original issue I see on a
cluster, so the test doesn't fail without the fix. 
On a cluster, the final stage had 16 reducers, but was writing into 5 buckets. No matter what
I do in q files, Tez always generates the correct number of reducers and taskId in filesinkoperator
never changes, each FSO writes its own files in an orderly manner; in the original repro each
reducer wrote files for multiple different buckets.
[~gopalv] [~djaiswal]  do you know by any change how to force Hive/Tez to have a number of
reducers different from the number of buckets for a SMB table, in tests?

> manifest collisions when inserting into bucketed sorted MM tables with dynamic partitioning
> -------------------------------------------------------------------------------------------
>
>                 Key: HIVE-20620
>                 URL: https://issues.apache.org/jira/browse/HIVE-20620
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>            Priority: Major
>         Attachments: HIVE-20620.patch
>
>




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