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From "Feldkamp, Brandon (CONT)" <Brandon.Feldk...@capitalone.com>
Subject Re: Connection refused exception
Date Tue, 29 Nov 2016 14:02:05 GMT
This pops up a little while later. I’ll have to check to see if I can see anything before!

016-11-24 21:51:02,443 [main] ERROR stram.StreamingAppMaster main - Exiting Application Master
java.lang.NullPointerException
                at com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.isPartitionRequired(AbstractKafkaInputOperator.java:804)
                at com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.processStats(AbstractKafkaInputOperator.java:715)
                at com.datatorrent.stram.plan.physical.PhysicalPlan$StatsListenerProxy.processStats(PhysicalPlan.java:206)
                at com.datatorrent.stram.plan.physical.PhysicalPlan.onStatusUpdate(PhysicalPlan.java:1797)
                at com.datatorrent.stram.StreamingContainerManager.processEvents(StreamingContainerManager.java:1035)
                at com.datatorrent.stram.StreamingContainerManager.monitorHeartbeat(StreamingContainerManager.java:798)
                at com.datatorrent.stram.StreamingAppMasterService.execute(StreamingAppMasterService.java:1025)
                at com.datatorrent.stram.StreamingAppMasterService.run(StreamingAppMasterService.java:647)
                at com.datatorrent.stram.StreamingAppMaster.main(StreamingAppMaster.java:104)

From: Pramod Immaneni <pramod@datatorrent.com>
Reply-To: "users@apex.apache.org" <users@apex.apache.org>
Date: Tuesday, November 29, 2016 at 8:57 AM
To: "users@apex.apache.org" <users@apex.apache.org>
Subject: Re: Connection refused exception

Brandon,

This is not related to kafkaInputOperator talking to Kafka. Do you see any other exceptions
in the logs around this exception before or after?

On Tue, Nov 29, 2016 at 6:54 AM, Feldkamp, Brandon (CONT) <Brandon.Feldkamp@capitalone.com<mailto:Brandon.Feldkamp@capitalone.com>>
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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One. The information transmitted herewith is intended only for use by the individual or entity
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