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Date: Sat, 24 May 2014 23:07:02 +0000 (UTC)
From: "Ashutosh Chauhan (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12709318.1397847805165.14576.1400972822098@arcas>
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Subject: [jira] [Updated] (HIVE-6934) PartitionPruner doesn't handle top
 level constant expression correctly
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     [ https://issues.apache.org/jira/browse/HIVE-6934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashutosh Chauhan updated HIVE-6934:
-----------------------------------

    Status: Open  (was: Patch Available)

Failed tests need to be looked at

> PartitionPruner doesn't handle top level constant expression correctly
> ----------------------------------------------------------------------
>
>                 Key: HIVE-6934
>                 URL: https://issues.apache.org/jira/browse/HIVE-6934
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Harish Butani
>            Assignee: Hari Sankar Sivarama Subramaniyan
>         Attachments: HIVE-6934.1.patch, HIVE-6934.2.patch
>
>
> You hit this error indirectly, because how we handle invalid constant comparisons. Consider:
> {code}
> create table x(key int, value string) partitioned by (dt int, ts string);
> -- both these queries hit this issue
> select * from x where key = 'abc';
> select * from x where dt = 'abc';
> -- the issue is the comparison get converted to the constant false
> -- and the PartitionPruner doesn't handle top level constant exprs corrcetly
> {code}
> Thanks to [~hsubramaniyan] for uncovering this as part of adding tests for HIVE-5376


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