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From "Rob Godfrey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (QPID-6482) NPE in SessionEndpoint.receiveTransfer when receiving large message
Date Wed, 08 Apr 2015 14:23:13 GMT

    [ https://issues.apache.org/jira/browse/QPID-6482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485292#comment-14485292

Rob Godfrey commented on QPID-6482:

OK - the "interesting" thing here is the "Unknown endpoint Transfer".  Basically this is saying
that the message has been received on a link, but the client doesn't know what that link is...
 The NullPointerException happens because of a bug in the client where you have a large message
which has encountered the above problem.

Is it possible to turn the protocol logging on and get a  bit more context for the flow of
frames/messages from the broker to the client.  We need to understand how the client (or broker)
has got into a state where it is receiving messages.

Do the broker logs show any exceptions? 

> NPE in SessionEndpoint.receiveTransfer when receiving large message
> -------------------------------------------------------------------
>                 Key: QPID-6482
>                 URL: https://issues.apache.org/jira/browse/QPID-6482
>             Project: Qpid
>          Issue Type: Bug
>          Components: Java Client
>    Affects Versions: 0.32
>            Reporter: Mark Soderquist
> We are occasionally seeing the following exception when receiving a message of 500000
bytes. Sometimes it helps to increase the receive timeout but not always:
> java.lang.NullPointerException
> 	at org.apache.qpid.amqp_1_0.transport.SessionEndpoint.receiveTransfer(SessionEndpoint.java:435)
> 	at org.apache.qpid.amqp_1_0.transport.ConnectionEndpoint.receiveTransfer(ConnectionEndpoint.java:655)
> 	at org.apache.qpid.amqp_1_0.type.transport.Transfer.invoke(Transfer.java:285)
> 	at org.apache.qpid.amqp_1_0.transport.ConnectionEndpoint.receive(ConnectionEndpoint.java:808)
> 	at org.apache.qpid.amqp_1_0.framing.FrameHandler.parse(FrameHandler.java:241)
> 	at org.apache.qpid.amqp_1_0.framing.ConnectionHandler.parse(ConnectionHandler.java:75)
> 	at org.apache.qpid.amqp_1_0.client.TCPTransportProvider.doRead(TCPTransportProvider.java:244)
> 	at org.apache.qpid.amqp_1_0.client.TCPTransportProvider.access$000(TCPTransportProvider.java:47)
> 	at org.apache.qpid.amqp_1_0.client.TCPTransportProvider$1.run(TCPTransportProvider.java:185)
> 	at java.lang.Thread.run(Thread.java:745)
> Unknown endpoint Transfer{handle=0,deliveryId=0,deliveryTag=\x00\x00\x00\x00\x00\x00\x00\x00,messageFormat=0}

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