GitHub user flyson opened a pull request:
https://github.com/apache/spark/pull/10258
Joinorder
This change is to adjust the join order of multi-table join so that the
join conditions can be correctly pushed down to the Join Operator.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/flyson/spark joinorder
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10258.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 #10258
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commit d09d905180c0eb9d8b1ed9aaf5d207e2fac6547c
Author: Min Qiu <[email protected]>
Date: 2015-12-02T02:01:02Z
Extract the common equality conditions that can be used as a join condition
commit 08a76aefcc6036d600fa92aee037515cce22ae09
Author: Min Qiu <[email protected]>
Date: 2015-12-03T01:01:41Z
bug fix for ColumnPruning rule to deal with Project <- Filter <- Join case
commit b002b393124568f6d171e5619d40ff749b9b639d
Author: Min Qiu <[email protected]>
Date: 2015-12-03T02:04:54Z
bug fix for ColumnPruning rule to deal with Project <- Filter <- Join case
commit e22892dab78bfe1dcf3c9a482b3c9b7e64c0a119
Author: Min Qiu <[email protected]>
Date: 2015-12-10T23:08:31Z
a new rule for adjusting the join order
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