GitHub user yucai reopened a pull request:
https://github.com/apache/spark/pull/21156
[SPARK-24087][SQL] Avoid shuffle when join keys are a super-set of bucket
keys
## What changes were proposed in this pull request?
To improve the bucket join, when join keys are a super-set of bucket keys,
we should avoid shuffle.
## How was this patch tested?
Enable ignored test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yucai/spark SPARK-24087
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21156.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 #21156
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commit b6bfdc21ed8edf98f9a3b9ac1c253c59adb141a2
Author: yucai <yyu1@...>
Date: 2018-04-25T00:49:43Z
[SPARK-24087][SQL] Avoid shuffle when join keys are a super-set of bucket
keys
commit a59c94f5b655fc034ce8907b98022cacf6bf318e
Author: yucai <yyu1@...>
Date: 2018-04-26T04:33:08Z
simplify the codes
commit 4e026e5e437dc7f578434244b55bb1ebe189bace
Author: yucai <yyu1@...>
Date: 2018-06-04T02:22:12Z
Add spark.sql.sortMergeJoinExec.childrenPartitioningDetection for user to
disable this feature
commit fa76a7823baf4e6eb05f33bc746ade7f65f44372
Author: yucai <yyu1@...>
Date: 2018-06-04T05:25:01Z
enable spark.sql.sortMergeJoinExec.childrenPartitioningDetection by default
commit 946688aee3d03d37a57270e654e00bb9236f21c4
Author: yucai <yyu1@...>
Date: 2018-06-04T05:28:51Z
should return
commit 981a0fd22d30768ce533982c9fcc701b15d4dc44
Author: yucai <yyu1@...>
Date: 2018-07-06T06:51:24Z
skip RangePartition
commit 76e7d5f67017604c29179ce55280e0fc56574fde
Author: yucai <yyu1@...>
Date: 2018-07-09T10:14:43Z
Merge remote-tracking branch 'origin/master' into pr21156
commit 371c3a932f4dede4aeb1be2c9db404b457547ecf
Author: yucai <yyu1@...>
Date: 2018-07-09T11:33:17Z
improve tests
commit de2bc4de76077f257b85e6a1d58ee17fbc770c8e
Author: yucai <yyu1@...>
Date: 2018-07-12T01:43:35Z
support shuffled hash join
commit f40606203da01efe400431ed9d2b8b70c0476fc6
Author: yucai <yyu1@...>
Date: 2018-07-26T14:33:40Z
remove bucket table check
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