[ 
https://issues.apache.org/jira/browse/SPARK-24352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Dongjoon Hyun resolved SPARK-24352.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 2.4.4
                   2.3.4
                   3.0.0

Issue resolved by pull request 25318
[https://github.com/apache/spark/pull/25318]

> Flaky test: StandaloneDynamicAllocationSuite
> --------------------------------------------
>
>                 Key: SPARK-24352
>                 URL: https://issues.apache.org/jira/browse/SPARK-24352
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core, Tests
>    Affects Versions: 2.3.0
>            Reporter: Marcelo Vanzin
>            Assignee: Marcelo Vanzin
>            Priority: Major
>             Fix For: 3.0.0, 2.3.4, 2.4.4
>
>
> From jenkins:
> [https://amplab.cs.berkeley.edu/jenkins/user/vanzin/my-views/view/Spark/job/spark-branch-2.3-test-maven-hadoop-2.6/384/testReport/junit/org.apache.spark.deploy/StandaloneDynamicAllocationSuite/executor_registration_on_a_blacklisted_host_must_fail/]
>  
> {noformat}
> Error Message
> There is already an RpcEndpoint called CoarseGrainedScheduler
> Stacktrace
>       java.lang.IllegalArgumentException: There is already an RpcEndpoint 
> called CoarseGrainedScheduler
>       at 
> org.apache.spark.rpc.netty.Dispatcher.registerRpcEndpoint(Dispatcher.scala:71)
>       at 
> org.apache.spark.rpc.netty.NettyRpcEnv.setupEndpoint(NettyRpcEnv.scala:130)
>       at 
> org.apache.spark.scheduler.cluster.CoarseGrainedSchedulerBackend.createDriverEndpointRef(CoarseGrainedSchedulerBackend.scala:396)
>       at 
> org.apache.spark.scheduler.cluster.CoarseGrainedSchedulerBackend.start(CoarseGrainedSchedulerBackend.scala:391)
>       at 
> org.apache.spark.scheduler.cluster.StandaloneSchedulerBackend.start(StandaloneSchedulerBackend.scala:61)
>       at 
> org.apache.spark.deploy.StandaloneDynamicAllocationSuite$$anonfun$1.apply$mcV$sp(StandaloneDynamicAllocationSuite.scala:512)
>       at 
> org.apache.spark.deploy.StandaloneDynamicAllocationSuite$$anonfun$1.apply(StandaloneDynamicAllocationSuite.scala:495)
>       at 
> org.apache.spark.deploy.StandaloneDynamicAllocationSuite$$anonfun$1.apply(StandaloneDynamicAllocationSuite.scala:495)
>       at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
>       at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
>       at org.scalatest.Transformer.apply(Transformer.scala:22)
>       at org.scalatest.Transformer.apply(Transformer.scala:20)
>       at org.scalatest.FunSuiteLike$$anon$1.apply(FunSuiteLike.scala:186)
>       at org.apache.spark.SparkFunSuite.withFixture(SparkFunSuite.scala:68)
>       at 
> org.scalatest.FunSuiteLike$class.invokeWithFixture$1(FunSuiteLike.scala:183)
>       at 
> org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:196)
>       at 
> org.scalatest.FunSuiteLike$$anonfun$runTest$1.apply(FunSuiteLike.scala:196)
> {noformat}
> This actually looks like a previous test is leaving some stuff running and 
> making this one fail.



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