You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Xuefu Zhang (JIRA)" <ji...@apache.org> on 2014/12/09 01:11:12 UTC

[jira] [Created] (HIVE-9045) Choosing right preference between map join and bucket map join [Spark Branch]

Xuefu Zhang created HIVE-9045:
---------------------------------

             Summary: Choosing right preference between map join and bucket map join [Spark Branch]
                 Key: HIVE-9045
                 URL: https://issues.apache.org/jira/browse/HIVE-9045
             Project: Hive
          Issue Type: Sub-task
          Components: Spark
            Reporter: Xuefu Zhang


Currently We convert a join to bucket map join only after it's converted to map join. Supposedly, however, bucket map join has a smaller memory print, so a join which doesn't fit to map join might be suitable for a bucket map join. It would be good if we can take this into consideration when applying join optimizations.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)