hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3916) For outer joins, when looping over the rows looking for filtered tags, it doesn't report progress
Date Sat, 19 Jan 2013 00:08:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13557786#comment-13557786
] 

Ashutosh Chauhan commented on HIVE-3916:
----------------------------------------

Kevin,
If you are doing outer joins, you may also want to be wary of HIVE-3381 and HIVE-2839
                
> For outer joins, when looping over the rows looking for filtered tags, it doesn't report
progress
> -------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-3916
>                 URL: https://issues.apache.org/jira/browse/HIVE-3916
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.11.0
>            Reporter: Kevin Wilfong
>            Assignee: Kevin Wilfong
>         Attachments: HIVE-3916.1.patch.txt
>
>
> In the CommonJoinOperator, for outer joins, there is a loop over every row in the AbstractRowContainer
checking for a filtered tag.  This can take a long time if there are a large number or rows,
and during this time, it does not report progress.  If this runs for long enough, Hadoop will
kill the task for failing to report progress.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message