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MQSeries.net Forum IndexWebSphere Message Broker SupportIntermittent BIP2114E error-TCPIPClientOutput

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venkap
PostPosted: Wed Dec 20, 2017 3:36 am Post subject: Intermittent BIP2114E error-TCPIPClientOutput Reply with quote

Newbie

Joined: 20 Dec 2017
Posts: 3

Hi Team,

I have message flow(sequence of nodes as below) which uses TCPIPClientOutput Node to send feed to splunk HeavyForwarder(TCPServer) via radware.

I see some intermittent BIP2114E error written in the IntegrationServer logs. My understanding about the error is due to concurrent usage of connection manager/pool while establishing connectivity to TCP server.

Can some shed some light in understanding the error in detail or am I missing some properties to be set on the TCPIP nodes which is causing the error..

Flow Overview : MQInput->JCN->TCPIPClientOutputNode(failure and Catch terminals of MQInput are connected to failure handler subflow).

IIB Version: 10.0.0.9

OS: zOs
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venkap
PostPosted: Wed Dec 20, 2017 3:38 am Post subject: Reply with quote

Newbie

Joined: 20 Dec 2017
Posts: 3

Error Details:BIP2114E (Msg 1/1) MQE5MBRK UTGN511 133 INTEGRATION NODE INTERNAL ERRO
R: DIAGNOSTIC INFORMATION 'Caught unexpected exception on ConnectionTh
read run()', 'SplunkRadware:7777', '', 'java.util.ConcurrentMo
dificationException at java.util.Hashtable$Enumerator.next(Hashtable.j
ava:1267) at com.ibm.broker.tcpip.ClientConnectionManager.makeConnecti
ons(ClientConnectionManager.java:620) at com.ibm.broker.tcpip.ClientCo
nnectionManager.runConnectionCreation(ClientConnectionManager.java:428
) at com.ibm.broker.tcpip.ConnectionThread.run(ConnectionThread.java:7
3) '.
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fjb_saper
PostPosted: Wed Dec 20, 2017 5:41 am Post subject: Reply with quote

Grand Poobah

Joined: 18 Nov 2003
Posts: 19707
Location: LI,NY

Seems to be related to the fact that an arraylist is being modified in a non threadsafe manner... Is your java compute thread safe?

See https://github.com/eoinsha/JavaPhoenixChannels/issues/19

Have fun
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venkap
PostPosted: Wed Dec 20, 2017 9:44 am Post subject: Reply with quote

Newbie

Joined: 20 Dec 2017
Posts: 3

Thanks for your reply. The linked shared by you has at least given me some idea about the exception.

JCN used in the flow doesn't have any array list and also the concurrentModitionException is due to HashTable.Enumerator() method used in the native code of TCPIP node.
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