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https://issues.apache.org/jira/browse/SPARK-24653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16523916#comment-16523916
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Apache Spark commented on SPARK-24653:
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User 'vanzin' has created a pull request for this issue:
https://github.com/apache/spark/pull/21639
> Flaky test "JoinSuite.test SortMergeJoin (with spill)"
> ------------------------------------------------------
>
> Key: SPARK-24653
> URL: https://issues.apache.org/jira/browse/SPARK-24653
> Project: Spark
> Issue Type: Bug
> Components: Tests
> Affects Versions: 2.4.0
> Reporter: Marcelo Vanzin
> Priority: Minor
>
> We've run into failures in this test in our internal jobs a few times. They
> look like this:
> {noformat}
> java.lang.AssertionError: assertion failed: expected full outer join to not
> spill, but did
> at scala.Predef$.assert(Predef.scala:170)
> at org.apache.spark.TestUtils$.assertNotSpilled(TestUtils.scala:189)
> at
> org.apache.spark.sql.JoinSuite$$anonfun$23$$anonfun$apply$mcV$sp$16.apply$mcV$sp(JoinSuite.scala:734)
> at
> org.apache.spark.sql.test.SQLTestUtils$class.withSQLConf(SQLTestUtils.scala:108)
> {noformat}
> I looked on the riselab jenkins and couldn't find a failure, so filing with a
> low priority.
> I did notice a possible race in the code that could explain the failure. Will
> send a PR.
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