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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/03/10 23:45:27 UTC

[GitHub] [spark] c21 opened a new pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

c21 opened a new pull request #31802:
URL: https://github.com/apache/spark/pull/31802


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   As a followup from code review in https://github.com/apache/spark/pull/31736#discussion_r588134104 , for `JoinCodegenSupport.genBuildSideVars`, we only need to generate build side variables with default values for LEFT OUTER and RIGHT OUTER join, but not for other join types (i.e. LEFT SEMI and LEFT ANTI). Create this PR to clean up the code.
   
   In addition, change multiple unit tests to cover both whole stage code-gen enabled and disabled. Harden the unit tests to exercise all code paths.
   
   ### Why are the changes needed?
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   Please clarify why the changes are needed. For instance,
     1. If you propose a new API, clarify the use case for a new API.
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   Avoid unnecessary code generation.
   
   ### Does this PR introduce _any_ user-facing change?
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   No.
   
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   Existing unit tests.
   * BHJ and SHJ inner join is covered in `InnerJoinSuite.scala`
   * BHJ and SHJ left outer and right outer join are covered in `OuterJoinSuite.scala`
   * BHJ and SHJ left semi, left anti and existence join are covered in `ExistenceJoinSuite.scala`


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[GitHub] [spark] c21 commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-797006018


   Thank you @cloud-fan and @dongjoon-hyun for review!


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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592068440



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/ExistenceJoinSuite.scala
##########
@@ -103,7 +103,7 @@ class ExistenceJoinSuite extends SparkPlanTest with SharedSparkSession {
       ProjectExec(output, FilterExec(condition, join))
     }
 
-    test(s"$testName using ShuffledHashJoin") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using ShuffledHashJoin") { _ =>

Review comment:
       This test enforcement looks orthogonal to this PR (`Avoiding unncessary code generation`). Can we do this as a test PR independently? We can merge it separately to the other branches.




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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592066686



##########
File path: sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -46,7 +46,7 @@ case class BroadcastHashJoinExec(
     left: SparkPlan,
     right: SparkPlan,
     isNullAwareAntiJoin: Boolean = false)
-  extends HashJoin with CodegenSupport {
+  extends HashJoin {

Review comment:
       If you don't mind, could you make a separate PR? You can use `[MINOR]` tag instead of creating a new JIRA.




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Posted by GitBox <gi...@apache.org>.
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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592102966



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/ExistenceJoinSuite.scala
##########
@@ -103,7 +103,7 @@ class ExistenceJoinSuite extends SparkPlanTest with SharedSparkSession {
       ProjectExec(output, FilterExec(condition, join))
     }
 
-    test(s"$testName using ShuffledHashJoin") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using ShuffledHashJoin") { _ =>

Review comment:
       @dongjoon-hyun - sure, updated.




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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r591962398



##########
File path: sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -46,7 +46,7 @@ case class BroadcastHashJoinExec(
     left: SparkPlan,
     right: SparkPlan,
     isNullAwareAntiJoin: Boolean = false)
-  extends HashJoin with CodegenSupport {
+  extends HashJoin {

Review comment:
       This is just a minor fix packed in this PR. `HashJoin` already extends `JoinCodegenSupport`. So we don't need `CodegenSupport` here.




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[GitHub] [spark] c21 commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-799189324


   Thank you @maropu for review as well!


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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592070442



##########
File path: sql/core/src/main/scala/org/apache/spark/sql/execution/joins/BroadcastHashJoinExec.scala
##########
@@ -46,7 +46,7 @@ case class BroadcastHashJoinExec(
     left: SparkPlan,
     right: SparkPlan,
     isNullAwareAntiJoin: Boolean = false)
-  extends HashJoin with CodegenSupport {
+  extends HashJoin {

Review comment:
       @dongjoon-hyun - sure, will do it.




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[GitHub] [spark] cloud-fan commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
cloud-fan commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796735909


   thanks, merging to master!


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Posted by GitBox <gi...@apache.org>.
SparkQA removed a comment on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796525447


   **[Test build #135965 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/135965/testReport)** for PR 31802 at commit [`a0cb676`](https://github.com/apache/spark/commit/a0cb67694bf398e827f31e3df842501b71bc0207).


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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592073176



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/ExistenceJoinSuite.scala
##########
@@ -103,7 +103,7 @@ class ExistenceJoinSuite extends SparkPlanTest with SharedSparkSession {
       ProjectExec(output, FilterExec(condition, join))
     }
 
-    test(s"$testName using ShuffledHashJoin") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using ShuffledHashJoin") { _ =>

Review comment:
       SPARK-34702 is for Apache Spark 3.2.0.




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[GitHub] [spark] SparkQA commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796525447


   **[Test build #135965 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/135965/testReport)** for PR 31802 at commit [`a0cb676`](https://github.com/apache/spark/commit/a0cb67694bf398e827f31e3df842501b71bc0207).


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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592072821



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/ExistenceJoinSuite.scala
##########
@@ -103,7 +103,7 @@ class ExistenceJoinSuite extends SparkPlanTest with SharedSparkSession {
       ProjectExec(output, FilterExec(condition, join))
     }
 
-    test(s"$testName using ShuffledHashJoin") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using ShuffledHashJoin") { _ =>

Review comment:
       Yes, I want to merge the test improvement into branch-3.1.




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[GitHub] [spark] maropu commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
maropu commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-797157080


   late lgtm.


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[GitHub] [spark] cloud-fan commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
cloud-fan commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796456221


   The code cleanup LGTM


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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592070353



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/ExistenceJoinSuite.scala
##########
@@ -103,7 +103,7 @@ class ExistenceJoinSuite extends SparkPlanTest with SharedSparkSession {
       ProjectExec(output, FilterExec(condition, join))
     }
 
-    test(s"$testName using ShuffledHashJoin") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using ShuffledHashJoin") { _ =>

Review comment:
       @dongjoon-hyun - if the purpose of separating PRs is to merge change to other branches as well, I can submit another PR for all test-related change, i.e. the change in `InnerJoinSuite.scala`, `OuterJoinSuite.scala` and `ExistenceJoinSuite.scala`.
   
   Do we want to do that? These test changes are valid to be merged into `3.1` branch as well.




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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592102650



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/InnerJoinSuite.scala
##########
@@ -207,7 +207,7 @@ class InnerJoinSuite extends SparkPlanTest with SharedSparkSession {
       }
     }
 
-    test(s"$testName using BroadcastNestedLoopJoin build right") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using BroadcastNestedLoopJoin build right") { _ =>

Review comment:
       same reason as change above.




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[GitHub] [spark] SparkQA commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796676073


   **[Test build #135965 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/135965/testReport)** for PR 31802 at commit [`a0cb676`](https://github.com/apache/spark/commit/a0cb67694bf398e827f31e3df842501b71bc0207).
    * This patch passes all tests.
    * This patch merges cleanly.
    * This patch adds no public classes.


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[GitHub] [spark] AmplabJenkins removed a comment on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
AmplabJenkins removed a comment on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796698199


   
   Refer to this link for build results (access rights to CI server needed): 
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[GitHub] [spark] cloud-fan closed pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
cloud-fan closed pull request #31802:
URL: https://github.com/apache/spark/pull/31802


   


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[GitHub] [spark] c21 commented on a change in pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on a change in pull request #31802:
URL: https://github.com/apache/spark/pull/31802#discussion_r592102545



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/execution/joins/InnerJoinSuite.scala
##########
@@ -198,7 +198,7 @@ class InnerJoinSuite extends SparkPlanTest with SharedSparkSession {
       }
     }
 
-    test(s"$testName using BroadcastNestedLoopJoin build left") {
+    testWithWholeStageCodegenOnAndOff(s"$testName using BroadcastNestedLoopJoin build left") { _ =>

Review comment:
       `BroadcastNestedLoopJoin` codegen is merged in `3.2` (current master), so keep test change here.




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[GitHub] [spark] c21 commented on pull request #31802: [SPARK-34702][SQL] Avoid unnecessary code generation in JoinCodegenSupport.genBuildSideVars

Posted by GitBox <gi...@apache.org>.
c21 commented on pull request #31802:
URL: https://github.com/apache/spark/pull/31802#issuecomment-796296728


   @cloud-fan and @maropu could you help take a look when you have time, thanks.


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