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Posted to issues@hive.apache.org by "Pengcheng Xiong (JIRA)" <ji...@apache.org> on 2015/06/01 19:11:17 UTC

[jira] [Assigned] (HIVE-10479) Empty tabAlias in columnInfo which triggers PPD

     [ https://issues.apache.org/jira/browse/HIVE-10479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pengcheng Xiong reassigned HIVE-10479:
--------------------------------------

    Assignee: Pengcheng Xiong  (was: Laljo John Pullokkaran)

> Empty tabAlias in columnInfo which triggers PPD
> -----------------------------------------------
>
>                 Key: HIVE-10479
>                 URL: https://issues.apache.org/jira/browse/HIVE-10479
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-10479.01.patch, HIVE-10479.patch
>
>
> in ql/src/java/org/apache/hadoop/hive/ql/ppd/OpProcFactory.java, line 477, when aliases contains empty string "" and key is an empty string "" too, it assumes that aliases contains key. This will trigger incorrect PPD. To reproduce it, apply the HIVE-10455 and run cbo_subq_notin.q.



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