[
https://issues.apache.org/jira/browse/HIVE-11097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110204#comment-15110204
]
Wan Chang commented on HIVE-11097:
----------------------------------
[~prasanth_j] symlink_text_input_format.q test failure relates to the patch. I
have fixed it and add some comments to specify the scene.
> 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, HIVE-11097.2.patch,
> HIVE-11097.3.patch, HIVE-11097.4.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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
