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[SPARK-21645]left outer join synchronize the condition from left table to right - #21161
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bakea wants to merge 1 commit into
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[SPARK-21645]left outer join synchronize the condition from left table to right#21161bakea wants to merge 1 commit into
bakea wants to merge 1 commit into
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AmplabJenkins
commented
Jun 9, 2018
Can one of the admins verify this patch? |
wangyum
commented
Nov 10, 2018
Member
I think it has fixed by SPARK-21479. |
zifeif2 pushed a commit
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Nov 22, 2025
Closesapache#21766Closesapache#21679Closesapache#21161Closesapache#20846Closesapache#19434Closesapache#18080Closesapache#17648Closesapache#17169 Add: Closesapache#22813Closesapache#21994Closesapache#22005Closesapache#22463 Add: Closesapache#15899 Add: Closesapache#22539Closesapache#21868Closesapache#21514Closesapache#21402Closesapache#21322Closesapache#21257Closesapache#20163Closesapache#19691Closesapache#18697Closesapache#18636Closesapache#17176Closesapache#23001 from wangyum/CloseStalePRs. Authored-by: Yuming Wang <yumwang@ebay.com> Signed-off-by: hyukjinkwon <gurwls223@apache.org>
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What changes were proposed in this pull request?
JIRA Issue:https://issues.apache.org/jira/browse/SPARK-21645
Change the optimize rule of leftouter join, if the filter column is contained in join column, the can synchronize the filter from left to right, For example, left join sql:
Select * from a left outer join b on a.id=b.id where a.id=12345；
After join optimizer rule, the filter a.id = 12345 of table a should be synchronized to table b(b.id=12345)
How was this patch tested?
(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
To see the query plan by explain the sql like 'Select * from a left outer join b on a.id=b.id where a.id=12345', guarantee the filter a.id=12345 is synchronized to table b.