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Posted to dev@hive.apache.org by "Namit Jain (JIRA)" <ji...@apache.org> on 2013/02/07 04:55:12 UTC
[jira] [Commented] (HIVE-3996) Correctly enforce the memory limit
on the multi-table map-join
[ https://issues.apache.org/jira/browse/HIVE-3996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573156#comment-13573156 ]
Namit Jain commented on HIVE-3996:
----------------------------------
Can you create a phabricator entry ?
> Correctly enforce the memory limit on the multi-table map-join
> --------------------------------------------------------------
>
> Key: HIVE-3996
> URL: https://issues.apache.org/jira/browse/HIVE-3996
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Affects Versions: 0.11.0
> Reporter: Vikram Dixit K
> Assignee: Vikram Dixit K
> Attachments: HIVE-3996.patch
>
>
> Currently with HIVE-3784, the joins are converted to map-joins based on checks of the table size against the config variable: hive.auto.convert.join.noconditionaltask.size.
> However, the current implementation will also merge multiple mapjoin operators into a single task regardless of whether the sum of the table sizes will exceed the configured value.
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