This is the only other stacktrace I could find but it’s dated after the initial 
cause of failure.

2016-11-24 21:52:24,681 [14/kafkaInputOperator:KafkaInputOperator] ERROR 
engine.StreamingContainer run - Operator set 
[OperatorDeployInfo[id=14,name=kafkaInputOperator,type=INPUT,checkpoint={583786630000239f,
 0, 
0},inputs=[],outputs=[OperatorDeployInfo.OutputDeployInfo[portName=outputPort,streamId=KafkaInput
 -> AuthParser,bufferServer=ip-200-120-36]]]] stopped running due to an 
exception.
java.lang.RuntimeException: replay
        at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.replay(AbstractKafkaInputOperator.java:330)
        at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.beginWindow(AbstractKafkaInputOperator.java:266)
        at com.datatorrent.stram.engine.InputNode.run(InputNode.java:122)
        at 
com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1407)
Caused by: java.io.EOFException: Received -1 when reading from channel, socket 
has likely been closed.
        at kafka.utils.Utils$.read(Utils.scala:376)
        at 
kafka.network.BoundedByteBufferReceive.readFrom(BoundedByteBufferReceive.scala:54)
        at kafka.network.Receive$class.readCompletely(Transmission.scala:56)
        at 
kafka.network.BoundedByteBufferReceive.readCompletely(BoundedByteBufferReceive.scala:29)
        at kafka.network.BlockingChannel.receive(BlockingChannel.scala:100)
        at kafka.consumer.SimpleConsumer.liftedTree1$1(SimpleConsumer.scala:81)
        at 
kafka.consumer.SimpleConsumer.kafka$consumer$SimpleConsumer$$sendRequest(SimpleConsumer.scala:71)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(SimpleConsumer.scala:109)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply(SimpleConsumer.scala:109)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1$$anonfun$apply$mcV$sp$1.apply(SimpleConsumer.scala:109)
        at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply$mcV$sp(SimpleConsumer.scala:108)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(SimpleConsumer.scala:108)
        at 
kafka.consumer.SimpleConsumer$$anonfun$fetch$1.apply(SimpleConsumer.scala:108)
        at kafka.metrics.KafkaTimer.time(KafkaTimer.scala:33)
        at kafka.consumer.SimpleConsumer.fetch(SimpleConsumer.scala:107)
        at kafka.javaapi.consumer.SimpleConsumer.fetch(SimpleConsumer.scala:47)
        at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.replay(AbstractKafkaInputOperator.java:304)
        ... 3 more
2016-11-24 21:52:24,690 [14/kafkaInputOperator:KafkaInputOperator] ERROR 
engine.StreamingContainer run - Shutdown of operator 
OperatorDeployInfo[id=14,name=kafkaInputOperator,type=INPUT,checkpoint={583786630000239f,
 0, 
0},inputs=[],outputs=[OperatorDeployInfo.OutputDeployInfo[portName=outputPort,streamId=KafkaInput
 -> AuthParser,bufferServer=ip-200-120-36]]] failed due to an exception.
java.lang.NullPointerException
        at 
com.datatorrent.contrib.kafka.SimpleKafkaConsumer.close(SimpleKafkaConsumer.java:348)
        at org.apache.commons.io.IOUtils.closeQuietly(IOUtils.java:303)
        at 
com.datatorrent.contrib.kafka.KafkaConsumer.stop(KafkaConsumer.java:157)
        at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.deactivate(AbstractKafkaInputOperator.java:405)
        at com.datatorrent.stram.engine.Node.deactivate(Node.java:646)
        at 
com.datatorrent.stram.engine.StreamingContainer.teardownNode(StreamingContainer.java:1347)
        at 
com.datatorrent.stram.engine.StreamingContainer.access$500(StreamingContainer.java:130)
        at 
com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1438)


From: Vlad Rozov <[email protected]>
Organization: DataTorrent
Reply-To: "[email protected]" <[email protected]>
Date: Tuesday, November 29, 2016 at 10:21 PM
To: "[email protected]" <[email protected]>
Subject: Re: Connection refused exception

Brandon,

Is the stacktrace from the app master log or is it from a local mode run? The 
exception is raised due to the buffer server termination in one of the 
operators containers and I guess that it happens when app master tries to purge 
data from the buffer server. Check the operators containers logs for 
exceptions/errors unless the application was started in the local mode. In the 
later case, try to enable DEBUG level.

Thank you,

Vlad
On 11/29/16 05:54, Feldkamp, Brandon (CONT) wrote:
Hello,

I’m wondering if anyone has seen a similar stack trace before as there isn’t a 
lot of info provided. I’m wondering if the connection refused is from one 
operator to another or the kafkaInputOperator being unable to connect to kafka.

Any ideas? Here’s the stacktrace:

2016-11-24 21:00:51,998 [ProcessWideEventLoop] ERROR netlet.AbstractClient 
handleException - Exception in event loop {id=ProcessWideEventLoop, head=7418, 
tail=7416, capacity=1024}
java.net.ConnectException: Connection refused
                at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
                at 
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
                at 
com.datatorrent.netlet.DefaultEventLoop.handleSelectedKey(DefaultEventLoop.java:371)
                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)
2016-11-24 21:01:01,839 [IPC Server handler 4 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=1,name=kafkaInputOperator]
2016-11-24 21:01:01,898 [IPC Server handler 29 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=7,name=kafkaInputOperator]
2016-11-24 21:01:32,991 [IPC Server handler 24 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=13,name=kafkaInputOperator]
2016-11-24 21:01:44,189 [IPC Server handler 22 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=10,name=kafkaInputOperator]
2016-11-24 21:01:44,604 [IPC Server handler 5 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=3,name=kafkaInputOperator]
2016-11-24 21:01:44,744 [IPC Server handler 16 on 44453] ERROR 
stram.StreamingContainerManager processOperatorFailure - Initiating container 
restart after operator failure PTOperator[id=12,name=kafkaInputOperator]
Thanks!
Brandon

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the reader of this message is not the intended recipient, you are hereby 
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