[jira] [Created] (SPARK-31946) Failed to register SIGPWR handler on MacOS

["wuyi (Jira)" <ji...@apache.org>]

wuyi created SPARK-31946:
----------------------------

             Summary: Failed to register SIGPWR handler on MacOS
                 Key: SPARK-31946
                 URL: https://issues.apache.org/jira/browse/SPARK-31946
             Project: Spark
          Issue Type: Sub-task
          Components: Spark Core
    Affects Versions: 3.1.0
         Environment:  
{code:java}
20/06/09 22:54:54 WARN SignalUtils: Failed to register SIGPWR handler - disabling decommission feature.
java.lang.IllegalArgumentException: Unknown signal: PWR
	at sun.misc.Signal.<init>(Signal.java:143)
	at org.apache.spark.util.SignalUtils$.$anonfun$register$1(SignalUtils.scala:83)
	at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:86)
	at org.apache.spark.util.SignalUtils$.register(SignalUtils.scala:81)
	at org.apache.spark.executor.CoarseGrainedExecutorBackend.onStart(CoarseGrainedExecutorBackend.scala:86)
	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}

Seem like MacOS is *POSIX* compliant. But SIGPWR is not specified in the *POSIX* specification. See [https://en.wikipedia.org/wiki/Signal_(IPC)#SIGPWR]

 
            Reporter: wuyi






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