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From "Gabor Somogyi (Jira)" <>
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
             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.

* Scala 2.12.10
* Java 1.8.0_241-b07

Steps to reproduce:
* Compile Spark
* ./sbin/
* ./sbin/ spark://host:7077
* submit an empty application

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>(
	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$$anon$
	at java.util.concurrent.Executors$
	at java.util.concurrent.ThreadPoolExecutor.runWorker(
	at java.util.concurrent.ThreadPoolExecutor$

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