[GitHub] [spark] zsxwing commented on a change in pull request #24396: [SPARK-27496][CORE]Fatal errors should also be sent back to the sender

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zsxwing commented on a change in pull request #24396: [SPARK-27496][CORE]Fatal errors should also be sent back to the sender
URL: https://github.com/apache/spark/pull/24396#discussion_r276758173
 
 

 ##########
 File path: core/src/main/scala/org/apache/spark/rpc/netty/Dispatcher.scala
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 @@ -225,7 +225,15 @@ private[netty] class Dispatcher(nettyEnv: NettyRpcEnv, numUsableCores: Int) exte
           }
         }
       } catch {
-        case ie: InterruptedException => // exit
+        case _: InterruptedException => // exit
+        case t: Throwable =>
+          try {
+            // Re-submit a MessageLoop so that Dispatcher will still work if
+            // UncaughtExceptionHandler decides to not kill JVM.
+            threadpool.execute(new MessageLoop)
 
 Review comment:
   I usually don't log if it's going to be re-thrown since it will cause double logs.

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