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Posted to issues@hive.apache.org by "Deepak Jaiswal (JIRA)" <ji...@apache.org> on 2017/12/18 20:49:00 UTC

[jira] [Work started] (HIVE-18218) SMB Join : Handle buckets with no splits.

     [ https://issues.apache.org/jira/browse/HIVE-18218?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-18218 started by Deepak Jaiswal.
---------------------------------------------
> SMB Join : Handle buckets with no splits.
> -----------------------------------------
>
>                 Key: HIVE-18218
>                 URL: https://issues.apache.org/jira/browse/HIVE-18218
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>
> While working on HIVE-18208, it was found that with SMB, the results are incorrect. This most likely is a product issue.
> auto_sortmerge_join_16 fails with wrong results due to this.
> cc [~hagleitn]
> The current logic in CustomPartitionVertex assumes that there is a split for each bucket whereas in  Tez, we can have no splits for empty buckets.



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