Just a correction for use case. Use case: kafka producer emits messages and processing messages using Datatorrent application, Based on the DT application logic divide the messages into two different groups and write it to two different kafka topics
Thanks, Srinivas From: Bandaru, Srinivas [mailto:[email protected]] Sent: Wednesday, October 12, 2016 1:25 PM To: [email protected] Cc: Singh, Jaspal Subject: KafkaSinglePortExactlyOnceOutputOperator Hi, Need some help with the errors we are having with" KafkaSinglePortExactlyOnceOutputOperator". When monitoring the application, We are observing that the operator getting inactive and restarts continuously. Could anyone help us with identifying an issue? Use case: kafka producer emits messages and processing messages using Datatorrent application, Based on the DT application logic divide the messages into two different groups and write it to two different Mapr strem topics. Resource manager log snippet. 2016-10-12 10:42:35,134 INFO org.apache.apex.malhar.kafka.KafkaSinglePortExactlyOnceOutputOperator: Rebuild the partial window after 6340600660773306680 2016-10-12 10:40:29,603 INFO com.example.datatorrent.TenantUpdateValidator: error 2016-10-12 10:40:29,605 ERROR com.datatorrent.stram.engine.StreamingContainer: Operator set [OperatorDeployInfo[id=3,name=topicUpdate,type=GENERIC,checkpoint={57fe56b50000012b, 0, 0},inputs=[OperatorDeployInfo.InputDeployInfo[portName=inputPort,streamId=jsonObject,sourceNodeId=2,sourcePortName=out,locality=<null>,partitionMask=0,partitionKeys=<null>]],outputs=[]]] stopped running due to an exception. java.lang.RuntimeException: Violates Exactly once. Not all the tuples received after operator reset. at org.apache.apex.malhar.kafka.KafkaSinglePortExactlyOnceOutputOperator.endWindow(KafkaSinglePortExactlyOnceOutputOperator.java:174) at com.datatorrent.stram.engine.GenericNode.processEndWindow(GenericNode.java:146) at com.datatorrent.stram.engine.GenericNode.run(GenericNode.java:357) at com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1407) 2016-10-12 10:40:29,617 INFO org.apache.kafka.clients.producer.KafkaProducer: Closing the Kafka producer with timeoutMillis = 9223372036854775807 ms. 2016-10-12 10:40:29,681 INFO com.datatorrent.stram.engine.StreamingContainer: Undeploy request: [3] 2016-10-12 10:40:29,682 INFO com.datatorrent.stram.engine.StreamingContainer: Undeploy complete. 2016-10-12 10:36:13,513 INFO com.datatorrent.bufferserver.server.Server: Received subscriber request: SubscribeRequestTuple{version=1.0, identifier=tcp://dbslt0080:60777/2.out.1, windowId=57fe57bf, type=jsonObject/3.inputPort, upstreamIdentifier=2.out.1, mask=0, partitions=null, bufferSize=0} 2016-10-12 10:36:15,534 ERROR com.datatorrent.netlet.AbstractLengthPrependerClient: Disconnecting Server.Subscriber{type=jsonObject/3.inputPort, mask=0, partitions=null} because of an exception. java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:197) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) at com.datatorrent.netlet.AbstractClient.read(AbstractClient.java:166) at com.datatorrent.netlet.DefaultEventLoop.handleSelectedKey(DefaultEventLoop.java:356) at com.datatorrent.netlet.OptimizedEventLoop$SelectedSelectionKeySet.forEach(OptimizedEventLoop.java:59) at com.datatorrent.netlet.OptimizedEventLoop.runEventLoop(OptimizedEventLoop.java:192) at com.datatorrent.netlet.OptimizedEventLoop.runEventLoop(OptimizedEventLoop.java:157) at com.datatorrent.netlet.DefaultEventLoop.run(DefaultEventLoop.java:156) at java.lang.Thread.run(Thread.java:745) Thanks, Srinivas This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately. This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.
