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Posted to reviews@spark.apache.org by ericl <gi...@git.apache.org> on 2016/06/08 22:31:37 UTC

[GitHub] spark pull request #13569: [SPARK-15791] Fix NPE in ScalarSubquery

GitHub user ericl opened a pull request:

    https://github.com/apache/spark/pull/13569

    [SPARK-15791] Fix NPE in ScalarSubquery

    ## What changes were proposed in this pull request?
    
    The fix is pretty simple, just don't make the executedPlan transient in `ScalarSubquery` since it is referenced at execution time.
    
    ## How was this patch tested?
    
    I verified the fix manually in non-local mode. It's not clear to me why the problem did not manifest in local mode, any suggestions?
    
    cc @davies 

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/ericl/spark fix-scalar-npe

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/13569.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 #13569
    
----
commit 7e2eb6f6f014f5c8ea15343deab205bed59496a1
Author: Eric Liang <ek...@databricks.com>
Date:   2016-06-08T22:29:47Z

    Wed Jun  8 15:29:47 PDT 2016

----


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Test PASSed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/60252/
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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by ericl <gi...@git.apache.org>.
Github user ericl commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Done


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Can you try create a unit test? Maybe it's related to ConvertToLocalRelation


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Test PASSed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/60255/
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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #3073 has finished](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/3073/consoleFull)** for PR 13569 at commit [`7a94dc1`](https://github.com/apache/spark/commit/7a94dc143f14345466fcc4e344d9b40b3ded178d).
     * This patch passes all tests.
     * This patch **does not merge cleanly**.
     * This patch adds no public classes.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    LGTM other than one last comment


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #3073 has started](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/3073/consoleFull)** for PR 13569 at commit [`7a94dc1`](https://github.com/apache/spark/commit/7a94dc143f14345466fcc4e344d9b40b3ded178d).


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60258 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60258/consoleFull)** for PR 13569 at commit [`7a94dc1`](https://github.com/apache/spark/commit/7a94dc143f14345466fcc4e344d9b40b3ded178d).


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Merged build finished. Test FAILed.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by ericl <gi...@git.apache.org>.
Github user ericl commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Also added an explicit test


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Test FAILed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/60258/
    Test FAILed.


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[GitHub] spark pull request #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by davies <gi...@git.apache.org>.
Github user davies commented on a diff in the pull request:

    https://github.com/apache/spark/pull/13569#discussion_r66561018
  
    --- Diff: sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala ---
    @@ -54,6 +54,10 @@ class SubquerySuite extends QueryTest with SharedSQLContext {
         t.createOrReplaceTempView("t")
       }
     
    +  test("rdd deserialization does not crash [SPARK-15791]") {
    +    sql("select (select 1 as b) as b").rdd.count()
    --- End diff --
    
    Should we check the result?


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by ericl <gi...@git.apache.org>.
Github user ericl commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Ok I figured it out, the NPE was trigged by calling `.rdd` on the result DataFrame. This was easily reproducible in unit tests, so I added `.rdd.count()` to all QueryPlan tests to verify this issue does not recur.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60255 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60255/consoleFull)** for PR 13569 at commit [`5b542ac`](https://github.com/apache/spark/commit/5b542ac6e5a0375a82612670ee3cd6afbc849ba8).
     * This patch passes all tests.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60258 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60258/consoleFull)** for PR 13569 at commit [`7a94dc1`](https://github.com/apache/spark/commit/7a94dc143f14345466fcc4e344d9b40b3ded178d).
     * This patch **fails PySpark unit tests**.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60205 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60205/consoleFull)** for PR 13569 at commit [`7e2eb6f`](https://github.com/apache/spark/commit/7e2eb6f6f014f5c8ea15343deab205bed59496a1).
     * This patch passes all tests.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by ericl <gi...@git.apache.org>.
Github user ericl commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Yeah I'm looking into how to reproduce this in a unit test. It seems we have to go through `DeserializeToObjectExec` to reproduce the npe:
    
    ```
    Execution 'q9-v1.4' failed: Job aborted due to stage failure: Task 0 in stage 146.0 failed 4 times, most recent failure: Lost task 0.3 in stage 146.0 (TID 48828, 10.0.206.208): java.lang.NullPointerException
    	at org.apache.spark.sql.execution.ScalarSubquery.dataType(subquery.scala:45)
    	at org.apache.spark.sql.catalyst.expressions.CaseWhenBase.dataType(conditionalExpressions.scala:103)
    	at org.apache.spark.sql.catalyst.expressions.Alias.toAttribute(namedExpressions.scala:165)
    	at org.apache.spark.sql.execution.ProjectExec$$anonfun$output$1.apply(basicPhysicalOperators.scala:33)
    	at org.apache.spark.sql.execution.ProjectExec$$anonfun$output$1.apply(basicPhysicalOperators.scala:33)
    	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    	at scala.collection.immutable.List.foreach(List.scala:318)
    	at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    	at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    	at org.apache.spark.sql.execution.ProjectExec.output(basicPhysicalOperators.scala:33)
    	at org.apache.spark.sql.execution.WholeStageCodegenExec.output(WholeStageCodegenExec.scala:291)
    	at org.apache.spark.sql.execution.DeserializeToObjectExec$$anonfun$2.apply(objects.scala:85)
    	at org.apache.spark.sql.execution.DeserializeToObjectExec$$anonfun$2.apply(objects.scala:84)
    	at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$24.apply(RDD.scala:775)
    	at org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$24.apply(RDD.scala:775)
    	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
    	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:318)
    	at org.apache.spark.rdd.RDD.iterator(RDD.scala:282)
    	at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
    	at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:318)
    	at org.apache.spark.rdd.RDD.iterator(RDD.scala:282)
    	at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)
    	at org.apache.spark.scheduler.Task.run(Task.scala:85)
    	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    	at java.lang.Thread.run(Thread.java:745)
    ```


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[GitHub] spark pull request #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/13569#discussion_r66563276
  
    --- Diff: sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala ---
    @@ -54,6 +54,10 @@ class SubquerySuite extends QueryTest with SharedSQLContext {
         t.createOrReplaceTempView("t")
       }
     
    +  test("rdd deserialization does not crash [SPARK-15791]") {
    +    sql("select (select 1 as b) as b").rdd.count()
    --- End diff --
    
    +1 
    
    although not that big of a deal, since other tests already cover some correctness. I'm going to merge this one to cut down the number of 2.0 blockers.



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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60255 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60255/consoleFull)** for PR 13569 at commit [`5b542ac`](https://github.com/apache/spark/commit/5b542ac6e5a0375a82612670ee3cd6afbc849ba8).


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Merged build finished. Test PASSed.


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[GitHub] spark pull request #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/13569#discussion_r66541796
  
    --- Diff: sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala ---
    @@ -54,6 +54,10 @@ class SubquerySuite extends QueryTest with SharedSQLContext {
         t.createOrReplaceTempView("t")
       }
     
    +  test("rdd deserialization does not crash") {
    --- End diff --
    
    put the jira number here SPARK-15791


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Merging in master/2.0.



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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Merged build finished. Test PASSed.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by davies <gi...@git.apache.org>.
Github user davies commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    LGTM


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    It's possible this was going through the local execution short-cut? 


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by rxin <gi...@git.apache.org>.
Github user rxin commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    LGTM


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[GitHub] spark pull request #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:

    https://github.com/apache/spark/pull/13569


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Test PASSed.
    Refer to this link for build results (access rights to CI server needed): 
    https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/60205/
    Test PASSed.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    Merged build finished. Test PASSed.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60252 has finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60252/consoleFull)** for PR 13569 at commit [`fc24dcb`](https://github.com/apache/spark/commit/fc24dcb0c01cdf7435966be3bf047833df87e5c9).
     * This patch passes all tests.
     * This patch merges cleanly.
     * This patch adds no public classes.


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60205 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60205/consoleFull)** for PR 13569 at commit [`7e2eb6f`](https://github.com/apache/spark/commit/7e2eb6f6f014f5c8ea15343deab205bed59496a1).


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[GitHub] spark issue #13569: [SPARK-15791] Fix NPE in ScalarSubquery

Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the issue:

    https://github.com/apache/spark/pull/13569
  
    **[Test build #60252 has started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/60252/consoleFull)** for PR 13569 at commit [`fc24dcb`](https://github.com/apache/spark/commit/fc24dcb0c01cdf7435966be3bf047833df87e5c9).


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