Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20345#discussion_r163115407
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/JoinOptimizationSuite.scala
---
@@ -116,7 +124,12 @@ class
Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20345#discussion_r163115184
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/JoinOptimizationSuite.scala
---
@@ -46,6 +46,19 @@ class
Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20345#discussion_r163114625
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/JoinOptimizationSuite.scala
---
@@ -46,6 +46,19 @@ class
Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20345#discussion_r163113728
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/joins.scala
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@@ -84,19 +84,46 @@ object ReorderJoin extends
GitHub user maropu opened a pull request:
https://github.com/apache/spark/pull/20345
[SPARK-23172][SQL] Respect Project nodes in ReorderJoin
## What changes were proposed in this pull request?
The current `ReorderJoin` optimizer rule cannot flatten a pattern `Join ->
Project ->
