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From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HIVE-11749) Deadlock of fetching InputFormat table when multiple root stage
Date Tue, 09 Feb 2016 21:24:18 GMT

    [ https://issues.apache.org/jira/browse/HIVE-11749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15139790#comment-15139790
] 

Sergey Shelukhin edited comment on HIVE-11749 at 2/9/16 9:23 PM:
-----------------------------------------------------------------

Hmm, I'm not very familiar with this code. This multi-root situation is MR-only, right? The
patch makes sense (I wonder if all partition objects actually have different tabledesc objects
- if not, reference equality would be enough and the problem would go away; otherwise, I wonder
if comparing db + table names is enough). [~hagleitn] any input? git blame points at you ;)
Otherwise +1


was (Author: sershe):
Hmm, I'm not very familiar with this code. This is MR-only, right? The patch makes sense (I
wonder if all partition objects actually have different tabledesc objects - if not, reference
equality would be enough and the problem would go away; otherwise, I wonder if comparing db
+ table names is enough). [~hagleitn] any input? git blame points at you ;) Otherwise +1

> Deadlock of fetching InputFormat table when multiple root stage
> ---------------------------------------------------------------
>
>                 Key: HIVE-11749
>                 URL: https://issues.apache.org/jira/browse/HIVE-11749
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: Ryu Kobayashi
>            Assignee: Kai Sasaki
>         Attachments: HIVE-11749.00.patch, HIVE-11749.01.patch, HIVE-11749.stack-tarace.txt
>
>
> But not always, to deadlock when it run the query. Environment are as follows:
> * Hadoop 2.6.0
> * Hive 0.13
> * JDK 1.7.0_79
> It will attach the stack trace.



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