Hello! I received the following errors in the workerLog.log files: ERROR EndpointWriter: AssociationError [akka.tcp://sparkWorker@stream4:33660] -> [akka.tcp://sparkExecutor@stream4:47929]: Error [Association failed with [akka.tcp://sparkExecutor@stream4:47929]] [ akka.remote.EndpointAssociationException: Association failed with [akka.tcp://sparkExecutor@stream4:47929] Caused by: akka.remote.transport.netty.NettyTransport$$anonfun$associate$1$$anon$2: Connection refused: stream4/x.x.x.x:47929 ] (For security reason have masked the IP with x.x.x.x). The same errors occurs for different ports (42395,39761). Even though I have these errors the application is finished with success. I have the following questions: 1. For what reasons is using Spark the above ports? What internal component is triggering them? 2. How I can get rid of these errors? 3. Why the application is still finished with success? 4. Why is trying with more ports?
I look forward for your answers. Regards. Florin
