Re: KafkaSinglePortExactlyOnceOutputOperator throwing exception about violation about Exactly once

[Vivek Bhide]

Thanks Sandesh.. It helped

Regards
Vivek



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Re: KafkaSinglePortExactlyOnceOutputOperator throwing exception about violation about Exactly once

[Sandesh Hegde]

1. Upstream needs to be idempotent, if not then during recovery you will
see that exception.
2. If you are using a custom tuple, please make sure that it HashCode &
Equals methods are properly implemented.


On Wed, Mar 14, 2018 at 10:09 AM Vivek Bhide  wrote:

> Exception stack trace is below
>
> 2018-03-13 17:00:53,219 INFO
> com.datatorrent.stram.StreamingContainerManager: Container
> container_1520983362676_0002_01_07 buffer server: 80e65028f6a8:60970
> 2018-03-13 17:00:54,811 INFO
> com.datatorrent.stram.StreamingContainerParent:
> child msg: 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:190)
> at
>
> com.datatorrent.stram.engine.GenericNode.processEndWindow(GenericNode.java:153)
> at
> com.datatorrent.stram.engine.GenericNode.run(GenericNode.java:397)
> at
>
> com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1428)
>  context:
>
> PTContainer[id=3(container_1520983362676_0002_01_07),state=ACTIVE,operators=[PTOperator[id=3,name=kafkaOutputOperator,state=ACTIVE]]]
>
>
>
>
>
> --
> Sent from: http://apache-apex-users-list.78494.x6.nabble.com/
>

Re: KafkaSinglePortExactlyOnceOutputOperator throwing exception about violation about Exactly once

[Vivek Bhide]

Exception stack trace is below

2018-03-13 17:00:53,219 INFO
com.datatorrent.stram.StreamingContainerManager: Container
container_1520983362676_0002_01_07 buffer server: 80e65028f6a8:60970
2018-03-13 17:00:54,811 INFO com.datatorrent.stram.StreamingContainerParent:
child msg: 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:190)
at
com.datatorrent.stram.engine.GenericNode.processEndWindow(GenericNode.java:153)
at com.datatorrent.stram.engine.GenericNode.run(GenericNode.java:397)
at
com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1428)
 context:
PTContainer[id=3(container_1520983362676_0002_01_07),state=ACTIVE,operators=[PTOperator[id=3,name=kafkaOutputOperator,state=ACTIVE]]]





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Re: KafkaSinglePortExactlyOnceOutputOperator

[Thomas Weise]

Yes, it may be better to pull out the topic selection into an upstream
operator that emits the messages on separate ports per topic and then you
can use the exactly-once output operator without customization.


On Wed, Oct 12, 2016 at 11:29 AM, Bandaru, Srinivas <
srinivas.band...@optum.com> wrote:

> 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:srinivas.band...@optum.com]
> *Sent:* Wednesday, October 12, 2016 1:25 PM
> *To:* users@apex.apache.org
> *Cc:* Singh, Jaspal
> *Subject:* KafkaSinglePortExactlyOnceOutputOperator
>
>
>
> Hi, Need some help with the errors we are having with” KafkaSinglePort
> *ExactlyOnce*OutputOperator”. 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={57fe56b5012b,
> 0,
> 0},inputs=[OperatorDeployInfo.InputDeployInfo[portName=inputPort,streamId=jsonObject,sourceNodeId=2,sourcePortName=out,locality=,partitionMask=0,partitionKeys=]],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
> 

RE: KafkaSinglePortExactlyOnceOutputOperator

[Bandaru, Srinivas]

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:srinivas.band...@optum.com]
Sent: Wednesday, October 12, 2016 1:25 PM
To: users@apex.apache.org
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={57fe56b5012b,
 0, 
0},inputs=[OperatorDeployInfo.InputDeployInfo[portName=inputPort,streamId=jsonObject,sourceNodeId=2,sourcePortName=out,locality=,partitionMask=0,partitionKeys=]],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


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