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From "Gabor Somogyi (Jira)" <j...@apache.org>
Subject [jira] [Created] (SPARK-31011) Failed to register signal handler for PWR
Date Mon, 02 Mar 2020 13:34:00 GMT
Gabor Somogyi created SPARK-31011:
-------------------------------------

             Summary: Failed to register signal handler for PWR
                 Key: SPARK-31011
                 URL: https://issues.apache.org/jira/browse/SPARK-31011
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 3.0.0
            Reporter: Gabor Somogyi


I've just tried to test something on standalone mode but the application fails.

Environment:
* Scala 2.12.10
* Java 1.8.0_241-b07

Steps to reproduce:
* Compile Spark
* ./sbin/start-master.sh
* ./sbin/start-slave.sh spark://host:7077
* submit an empty application

Error:
{code:java}
20/03/02 14:25:44 INFO SignalUtils: Registering signal handler for PWR
20/03/02 14:25:44 WARN SignalUtils: Failed to register signal handler for PWR
java.lang.IllegalArgumentException: Unknown signal: PWR
	at sun.misc.Signal.<init>(Signal.java:143)
	at org.apache.spark.util.SignalUtils$.$anonfun$register$1(SignalUtils.scala:64)
	at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:86)
	at org.apache.spark.util.SignalUtils$.register(SignalUtils.scala:62)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend.onStart(CoarseGrainedExecutorBackend.scala:85)
	at org.apache.spark.rpc.netty.Inbox.$anonfun$process$1(Inbox.scala:120)
	at org.apache.spark.rpc.netty.Inbox.safelyCall(Inbox.scala:203)
	at org.apache.spark.rpc.netty.Inbox.process(Inbox.scala:100)
	at org.apache.spark.rpc.netty.MessageLoop.org$apache$spark$rpc$netty$MessageLoop$$receiveLoop(MessageLoop.scala:75)
	at org.apache.spark.rpc.netty.MessageLoop$$anon$1.run(MessageLoop.scala:41)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
{code}




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