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https://issues.apache.org/jira/browse/HIVE-6098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865981#comment-13865981
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Thejas M Nair commented on HIVE-6098:
-------------------------------------
Can you add the following to release notes -
- Instructions for running hive queries with tez
- Any different build/test instructions for tez.
- What features are supported with tez changes in this patch and what is not
> Merge Tez branch into trunk
> ---------------------------
>
> Key: HIVE-6098
> URL: https://issues.apache.org/jira/browse/HIVE-6098
> Project: Hive
> Issue Type: New Feature
> Affects Versions: 0.12.0
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-6098.1.patch, HIVE-6098.2.patch, HIVE-6098.3.patch,
> HIVE-6098.4.patch, HIVE-6098.5.patch, HIVE-6098.6.patch, HIVE-6098.7.patch,
> HIVE-6098.8.patch, hive-on-tez-conf.txt
>
>
> I think the Tez branch is at a point where we can consider merging it back
> into trunk after review.
> Tez itself has had its first release, most hive features are available on Tez
> and the test coverage is decent. There are a few known limitations, all of
> which can be handled in trunk as far as I can tell (i.e.: None of them are
> large disruptive changes that still require a branch.)
> Limitations:
> - Union all is not yet supported on Tez
> - SMB is not yet supported on Tez
> - Bucketed map-join is executed as broadcast join (bucketing is ignored)
> Since the user is free to toggle hive.optimize.tez, it's obviously possible
> to just run these on MR.
> I am hoping to follow the approach that was taken with vectorization and
> shoot for a merge instead of single commit. This would retain history of the
> branch. Also in vectorization we required at least three +1s before merge,
> I'm hoping to go with that as well.
> I will add a combined patch to this ticket for review purposes (not for
> commit). I'll also attach instructions to run on a cluster if anyone wants to
> try.
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