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Spark error- java.lang.IllegalStateException: Expected SaslMessage, received something else (maybe your client does not have SASL enabled?)

By Dinesh

 

Exception Trace - 

23/09/08 19:37:39 dispatcher-event-loop-0-dispatcher-event-loop-0id ERROR YarnClusterScheduler: Lost executor 1 on Unable to create executor due to Unable to register with external shuffle server due to : java.lang.IllegalStateException: Expected SaslMessage, received something else (maybe your client does not have SASL enabled?)
at org.apache.spark.network.sasl.SaslMessage.decode(SaslMessage.java:69)
	at org.apache.spark.network.sasl.SaslRpcHandler.doAuthChallenge(SaslRpcHandler.java:80)
	at org.apache.spark.network.server.AbstractAuthRpcHandler.receive(AbstractAuthRpcHandler.java:59)
	at org.apache.spark.network.server.TransportRequestHandler.processRpcRequest(TransportRequestHandler.java:180)


Reason - 

This error was coming in our case when - 
  • spark.shuffle.service.enabled=true
  • spark.dynamicAllocation.enabled=true

Solution - 

  1. Set following false - 
    1. spark.shuffle.service.enabled=false
    2. spark.dynamicAllocation.enabled=false
  2. Or, Set following property - 
    1. spark.authenticate=true

Additionally you can try and set following properties as well - 
  • spark.network.crypto.enabled true

  • spark.network.crypto.saslFallback true
  • spark.network.sasl.serverAlwaysEncrypt true
  • spark.authenticate.enableSaslEncryption true

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