REST API time out ( flink 1.5 ) on SP

[Vishal Santoshi]

java.util.concurrent.CompletionException: akka.pattern.AskTimeoutException:
Ask timed out on [Actor[akka://flink/user/jobmanager_10#-862909719]] after
[10000 ms]. Sender[null] sent message of type
"org.apache.flink.runtime.rpc.messages.LocalFencedMessage".
  at .


which exact configuration is this..