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Type:
New Feature
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 0.12.0
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Fix Version/s: 0.13.0
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Component/s: None
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Labels:None
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Release Note:
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.
- blocks
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HIVE-4660 Let there be Tez
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- Resolved
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- is blocked by
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HIVE-6125 Tez: Refactoring changes
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- Resolved
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HIVE-6168 Fix some javadoc issues on Tez branch
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- Resolved
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HIVE-6172 Whitespaces and comments on Tez
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- Resolved
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- is related to
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HIVE-6128 Add tez variables to hive-default.xml
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- Resolved
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HIVE-6636 /user/hive is a bad default for HDFS jars path for Tez
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- Resolved
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