Unfortunately, we’re only seeing the initial connection refused
exception that I posted. So, if the issue is related to the buffer
server as suggested below, is that something we can mitigate? Do we
need to allocate more memory to the buffer servers?
“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.”
*From: *Ashwin Chandra Putta <ashwinchand...@gmail.com>
*Reply-To: *"users@apex.apache.org" <users@apex.apache.org>
*Date: *Wednesday, November 30, 2016 at 12:07 PM
*To: *"users@apex.apache.org" <users@apex.apache.org>
*Subject: *Re: Connection refused exception
Can you check in stram events on the gateway UI, you can select a time
range to begin at the start of the application so you can see the
series of events that happened in a timeline. Then you will find the
first error in that list. You can find stram events in the logical tab
to the right for the application in monitor page.
Regards,
Ashwin.
On Wed, Nov 30, 2016 at 8:20 AM, Vlad Rozov <v.ro...@datatorrent.com
<mailto:v.ro...@datatorrent.com>> wrote:
Hmm, that is strange. I would expect an ERROR in the
KafkaInputOperator around 21:01. Please check the earliest killed
container log.
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]
Thank you,
Vlad
On 11/30/16 07:17, Feldkamp, Brandon (CONT) wrote:
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$2.run(StreamingContainer.java:1438)
*From: *Vlad Rozov <v.ro...@datatorrent.com>
<mailto:v.ro...@datatorrent.com>
*Organization: *DataTorrent
*Reply-To: *"users@apex.apache.org"
<mailto:users@apex.apache.org> <users@apex.apache.org>
<mailto:users@apex.apache.org>
*Date: *Tuesday, November 29, 2016 at 10:21 PM
*To: *"users@apex.apache.org" <mailto:users@apex.apache.org>
<users@apex.apache.org> <mailto:users@apex.apache.org>
*Subject: *Re: Connection refused exception
Brandon,
Is the stacktrace from the app master log or is it from a
local mode run? The exception is raised due to the buffer
server termination in one of the operators containers and I
guess that it happens when app master tries to purge data from
the buffer server. Check the operators containers logs for
exceptions/errors unless the application was started in the
local mode. In the later case, try to enable DEBUG level.
Thank you,
Vlad
On 11/29/16 05:54, Feldkamp, Brandon (CONT) wrote:
Hello,
I’m wondering if anyone has seen a similar stack trace
before as there isn’t a lot of info provided. I’m
wondering if the connection refused is from one operator
to another or the kafkaInputOperator being unable to
connect to kafka.
Any ideas? Here’s the stacktrace:
2016-11-24 21:00:51,998 [ProcessWideEventLoop] ERROR
netlet.AbstractClient handleException - Exception in event
loop {id=ProcessWideEventLoop, head=7418, tail=7416,
capacity=1024}
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at
com.datatorrent.netlet.DefaultEventLoop.handleSelectedKey(DefaultEventLoop.java:371)
at
com.datatorrent.netlet.OptimizedEventLoop$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
------------------------------------------------------------------------
The information contained in this e-mail is confidential
and/or proprietary to Capital One and/or its affiliates
and may only be used solely in performance of work or
services for Capital One. The information transmitted
herewith is intended only for use by the individual or
entity to which it is addressed. If the reader of this
message is not the intended recipient, you are hereby
notified that any review, retransmission, dissemination,
distribution, copying or other use of, or taking of any
action in reliance upon this information is strictly
prohibited. If you have received this communication in
error, please contact the sender and delete the material
from your computer.
------------------------------------------------------------------------
The information contained in this e-mail is confidential
and/or proprietary to Capital One and/or its affiliates and
may only be used solely in performance of work or services for
Capital One. The information transmitted herewith is intended
only for use by the individual or entity to which it is
addressed. If the reader of this message is not the intended
recipient, you are hereby notified that any review,
retransmission, dissemination, distribution, copying or other
use of, or taking of any action in reliance upon this
information is strictly prohibited. If you have received this
communication in error, please contact the sender and delete
the material from your computer.
--
Regards,
Ashwin.
------------------------------------------------------------------------
The information contained in this e-mail is confidential and/or
proprietary to Capital One and/or its affiliates and may only be used
solely in performance of work or services for Capital One. The
information transmitted herewith is intended only for use by the
individual or entity to which it is addressed. If the reader of this
message is not the intended recipient, you are hereby notified that
any review, retransmission, dissemination, distribution, copying or
other use of, or taking of any action in reliance upon this
information is strictly prohibited. If you have received this
communication in error, please contact the sender and delete the
material from your computer.
