jiangxb1987 commented on a change in pull request #28746:
URL: https://github.com/apache/spark/pull/28746#discussion_r436492690
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File path: core/src/main/scala/org/apache/spark/deploy/LocalSparkCluster.scala
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@@ -74,12 +74,17 @@ class LocalSparkCluster(
def stop(): Unit = {
logInfo("Shutting down local Spark cluster.")
+ // SPARK-31922: wait one more second before shutting down rpcEnvs of
master and worker,
+ // in order to let the cluster have time to handle the
`UnregisterApplication` message.
+ // Otherwise, we could hit "RpcEnv already stopped" error.
+ Thread.sleep(1000)
// Stop the workers before the master so they don't get upset that it
disconnected
- workerRpcEnvs.foreach(_.shutdown())
- masterRpcEnvs.foreach(_.shutdown())
- workerRpcEnvs.foreach(_.awaitTermination())
- masterRpcEnvs.foreach(_.awaitTermination())
- masterRpcEnvs.clear()
- workerRpcEnvs.clear()
+ Seq(workerRpcEnvs, masterRpcEnvs).foreach { rpcEnvArr =>
+ rpcEnvArr.foreach { rpcEnv => Utils.tryLog {
+ rpcEnv.shutdown()
+ rpcEnv.awaitTermination()
+ }}
+ rpcEnvArr.clear()
Review comment:
I doubt this is right, it seems previously the masterRpcEnvs are cleared
before workerRpcEnvs.
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