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[GitHub] [spark] Ngone51 opened a new pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Ngone51 opened a new pull request #28923:
URL: https://github.com/apache/spark/pull/28923


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   This PR fix `UserDefinedType.equal()` by comparing the UDT class instead of checking `acceptsType()`.
   
   ### Why are the changes needed?
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     1. If you propose a new API, clarify the use case for a new API.
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   It's weird that equality comparison between two UDT types can have different result by switching the order:
   
   ```scala
   // ExampleSubTypeUDT.userClass is a subclass of ExampleBaseTypeUDT.userClass
   val udt1 = new ExampleBaseTypeUDT
   val udt2 = new ExampleSubTypeUDT
   println(udt1 == udt2) // true
   println(udt2 == udt1) // false
   ```
   
   ### Does this PR introduce _any_ user-facing change?
   <!--
   Note that it means *any* user-facing change including all aspects such as the documentation fix.
   If yes, please clarify the previous behavior and the change this PR proposes - provide the console output, description and/or an example to show the behavior difference if possible.
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   Yes.
   
   Before:
   ```scala
   // ExampleSubTypeUDT.userClass is a subclass of ExampleBaseTypeUDT.userClass
   val udt1 = new ExampleBaseTypeUDT
   val udt2 = new ExampleSubTypeUDT
   println(udt1 == udt2) // true
   println(udt2 == udt1) // false
   ```
   
   After:
   ```scala
   // ExampleSubTypeUDT.userClass is a subclass of ExampleBaseTypeUDT.userClass
   val udt1 = new ExampleBaseTypeUDT
   val udt2 = new ExampleSubTypeUDT
   println(udt1 == udt2) // false
   println(udt2 == udt1) // false
   ```
   
   
   ### How was this patch tested?
   <!--
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   -->
   
   Added a unit test.


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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-648998703


   **[Test build #124486 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124486/testReport)** for PR 28923 at commit [`b29cef0`](https://github.com/apache/spark/commit/b29cef0f77fe59474c1c1520c26b9623225f7566).
    * This patch passes all tests.
    * This patch merges cleanly.
    * This patch adds no public classes.


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Posted by GitBox <gi...@apache.org>.
SparkQA removed a comment on pull request #28923:
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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650973560


   **[Test build #124617 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124617/testReport)** for PR 28923 at commit [`28f46de`](https://github.com/apache/spark/commit/28f46debdf5cd50b9e34476d1723d0fde5e6ca3a).
    * This patch **fails due to an unknown error code, -9**.
    * This patch merges cleanly.
    * This patch adds no public classes.


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Posted by GitBox <gi...@apache.org>.
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   **[Test build #124486 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124486/testReport)** for PR 28923 at commit [`b29cef0`](https://github.com/apache/spark/commit/b29cef0f77fe59474c1c1520c26b9623225f7566).


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[GitHub] [spark] dongjoon-hyun commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650812833


   The PR title, `UserDefinedType.equal() should be symmetrical`, seems to be too strong because we will not backport this to `branch-3.0` or `branch-2.4`. Could you revise a little, @Ngone51 ?


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[GitHub] [spark] SparkQA removed a comment on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA removed a comment on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650865515


   **[Test build #124617 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124617/testReport)** for PR 28923 at commit [`28f46de`](https://github.com/apache/spark/commit/28f46debdf5cd50b9e34476d1723d0fde5e6ca3a).


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[GitHub] [spark] maropu commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
maropu commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-717609168


   I've backported this into branch-3.0/2.4. For the reason, please see: https://github.com/apache/spark/pull/30157/files#r512494277


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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-648813222


   **[Test build #124486 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124486/testReport)** for PR 28923 at commit [`b29cef0`](https://github.com/apache/spark/commit/b29cef0f77fe59474c1c1520c26b9623225f7566).


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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650637926


   **[Test build #124567 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124567/testReport)** for PR 28923 at commit [`b29cef0`](https://github.com/apache/spark/commit/b29cef0f77fe59474c1c1520c26b9623225f7566).
    * This patch passes all tests.
    * This patch merges cleanly.
    * This patch adds no public classes.


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[GitHub] [spark] Ngone51 commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
Ngone51 commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650862464


   @dongjoon-hyun Updated the title, please take another look.


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[GitHub] [spark] dongjoon-hyun closed pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun closed pull request #28923:
URL: https://github.com/apache/spark/pull/28923


   


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[GitHub] [spark] maropu commented on a change in pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
maropu commented on a change in pull request #28923:
URL: https://github.com/apache/spark/pull/28923#discussion_r445254621



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/UserDefinedTypeSuite.scala
##########
@@ -134,6 +134,17 @@ class UserDefinedTypeSuite extends QueryTest with SharedSparkSession with Parque
     MyLabeledPoint(1.0, new TestUDT.MyDenseVector(Array(0.1, 1.0))),
     MyLabeledPoint(0.0, new TestUDT.MyDenseVector(Array(0.3, 3.0)))).toDF()
 
+
+  test("equal") {
+    val udt1 = new ExampleBaseTypeUDT
+    val udt2 = new ExampleSubTypeUDT
+    val udt3 = new ExampleSubTypeUDT
+    assert(!(udt1 === udt2))

Review comment:
       nit: `!==`?




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[GitHub] [spark] Ngone51 commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
Ngone51 commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-648811057


   @cloud-fan @HyukjinKwon Please take a look, thanks!


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[GitHub] [spark] cloud-fan commented on a change in pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
cloud-fan commented on a change in pull request #28923:
URL: https://github.com/apache/spark/pull/28923#discussion_r444951512



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/UserDefinedTypeSuite.scala
##########
@@ -134,6 +134,17 @@ class UserDefinedTypeSuite extends QueryTest with SharedSparkSession with Parque
     MyLabeledPoint(1.0, new TestUDT.MyDenseVector(Array(0.1, 1.0))),
     MyLabeledPoint(0.0, new TestUDT.MyDenseVector(Array(0.3, 3.0)))).toDF()
 
+
+  test("equal") {

Review comment:
       can we also add a test case for `acceptsType`?




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[GitHub] [spark] dongjoon-hyun commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650902382


   Thank you, @Ngone51 and all. Today's 3 commits are only test case changes and I tested locally. The main body is already tested. Merged to master for Apache Spark 3.1.0.


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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650586478


   **[Test build #124567 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124567/testReport)** for PR 28923 at commit [`b29cef0`](https://github.com/apache/spark/commit/b29cef0f77fe59474c1c1520c26b9623225f7566).


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[GitHub] [spark] SparkQA commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
SparkQA commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650865515


   **[Test build #124617 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/124617/testReport)** for PR 28923 at commit [`28f46de`](https://github.com/apache/spark/commit/28f46debdf5cd50b9e34476d1723d0fde5e6ca3a).


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[GitHub] [spark] Ngone51 commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
Ngone51 commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650862625


   Hi all, I've updated the PR according to your comments. Please take another look, thanks!


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[GitHub] [spark] dongjoon-hyun commented on a change in pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on a change in pull request #28923:
URL: https://github.com/apache/spark/pull/28923#discussion_r446690196



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/UserDefinedTypeSuite.scala
##########
@@ -134,6 +134,17 @@ class UserDefinedTypeSuite extends QueryTest with SharedSparkSession with Parque
     MyLabeledPoint(1.0, new TestUDT.MyDenseVector(Array(0.1, 1.0))),
     MyLabeledPoint(0.0, new TestUDT.MyDenseVector(Array(0.3, 3.0)))).toDF()
 
+
+  test("equal") {

Review comment:
       BTW, @Ngone51 . Although it seems to be considered as `Improvement` and should be `Improvement` due to the behavior change, it would be better if we have a test prefix `SPARK-32090: ` here in this PR. If you don't mind, please add it.




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[GitHub] [spark] maropu commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
maropu commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-649155603


   LGTM except for the @cloud-fan comment.


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[GitHub] [spark] Ngone51 commented on pull request #28923: [SPARK-32090][SQL] Improve UserDefinedType.equal() to make it be symmetrical

Posted by GitBox <gi...@apache.org>.
Ngone51 commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-651027624


   thanks all!!


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[GitHub] [spark] Ngone51 commented on a change in pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
Ngone51 commented on a change in pull request #28923:
URL: https://github.com/apache/spark/pull/28923#discussion_r446734093



##########
File path: sql/core/src/test/scala/org/apache/spark/sql/UserDefinedTypeSuite.scala
##########
@@ -134,6 +134,17 @@ class UserDefinedTypeSuite extends QueryTest with SharedSparkSession with Parque
     MyLabeledPoint(1.0, new TestUDT.MyDenseVector(Array(0.1, 1.0))),
     MyLabeledPoint(0.0, new TestUDT.MyDenseVector(Array(0.3, 3.0)))).toDF()
 
+
+  test("equal") {

Review comment:
       Sure.




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[GitHub] [spark] dongjoon-hyun commented on pull request #28923: [SPARK-32090][SQL] UserDefinedType.equal() should be symmetrical

Posted by GitBox <gi...@apache.org>.
dongjoon-hyun commented on pull request #28923:
URL: https://github.com/apache/spark/pull/28923#issuecomment-650586329


   Retest this please.


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