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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11097) HiveInputFormat uses String.startsWith to compare splitPath and PathToAliases
Date Sat, 27 Jun 2015 21:39:04 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11097?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-11097:
------------------------------------
    Assignee: Wan Chang

> HiveInputFormat uses String.startsWith to compare splitPath and PathToAliases
> -----------------------------------------------------------------------------
>
>                 Key: HIVE-11097
>                 URL: https://issues.apache.org/jira/browse/HIVE-11097
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats
>    Affects Versions: 0.13.0, 0.14.0, 0.13.1, 1.0.0, 1.2.0
>         Environment: Hive 0.13.1, Hive 2.0.0, hadoop 2.4.1
>            Reporter: Wan Chang
>            Assignee: Wan Chang
>            Priority: Critical
>         Attachments: HIVE-11097.1.patch
>
>
> Say we have a sql as
> {code}
> create table if not exists test_orc_src (a int, b int, c int) stored as orc;
> create table if not exists test_orc_src2 (a int, b int, d int) stored as orc;
> insert overwrite table test_orc_src select 1,2,3 from src limit 1;
> insert overwrite table test_orc_src2 select 1,2,4 from src limit 1;
> set hive.auto.convert.join = false;
> set hive.execution.engine=mr;
> select
>   tb.c
> from test.test_orc_src tb
> join (select * from test.test_orc_src2) tm
> on tb.a = tm.a
> where tb.b = 2
> {code}
> The correct result is 3 but it produced no result.
> I find that in HiveInputFormat.pushProjectionsAndFilters
> {code}
> match = splitPath.startsWith(key) || splitPathWithNoSchema.startsWith(key);
> {code}
> It uses startsWith to combine aliases with path, so tm will match two alias in this case.



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