[jira] [Created] (HIVE-3996) Correctly enforce the memory limit on the multi-table map-join

["Vikram Dixit K (JIRA)" <ji...@apache.org>]

Vikram Dixit K created HIVE-3996:
------------------------------------

             Summary: 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


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.


--
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