GitHub user zuyu opened a pull request:
https://github.com/apache/incubator-quickstep/pull/181
Added limited optimizer support for Partitioned Hash Joins.
This PR allows repartition for non-stored, partitioned input relations for
hash joins.
Repartition will generate the best partition attribute if both input
relations have partitions that do not meet the join condition. Otherwise,
repartition on one input relation will reuse the partition attribute from the
other that meets the join condition.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-quickstep
reorder-partitioned-hash-join
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/181.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #181
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commit fb274c57a80fb98a4ce8318dbb46affb8375e028
Author: Zuyu Zhang <zu...@apache.org>
Date: 2017-01-25T09:49:28Z
Added limited optimizer support for Partitioned Hash Joins.
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