[
https://issues.apache.org/jira/browse/HIVE-4606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13678964#comment-13678964
]
Ashutosh Chauhan commented on HIVE-4606:
----------------------------------------
It probably is a good idea to use(or enhance)
ql/src/java/org/apache/hadoop/hive/ql/util/JavaDataModel.java for estimating
memory sizes of object than adding a new one.
> Implement vector group by hash spill
> ------------------------------------
>
> Key: HIVE-4606
> URL: https://issues.apache.org/jira/browse/HIVE-4606
> Project: Hive
> Issue Type: Sub-task
> Components: Query Processor
> Affects Versions: vectorization-branch
> Reporter: Remus Rusanu
> Assignee: Remus Rusanu
> Fix For: vectorization-branch
>
> Attachments: HIVE-4606.1.patch.txt, HIVE-4606.2.patch.txt
>
>
> the row mode GBy operator is capable of spilling the hash map (by emitting it
> into the M/R and deleting the keys emitted) to conform to emmory constraints.
> The VGBy should be able to do the same.
--
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
