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https://issues.apache.org/jira/browse/QPID-6482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15050568#comment-15050568
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Andrew Kenworthy edited comment on QPID-6482 at 12/10/15 10:52 AM:
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I am hitting this issue for messages that are far smaller: around the 100-150KB
mark. I am using EventHub as my input and it looks as though the issue here in
SessionEndpoint:
{code}
if(endpoint == null)
{
//TODO - error unknown link
System.err.println("Unknown endpoint " + transfer);
}
UnsignedInteger deliveryId = transfer.getDeliveryId();
if(deliveryId == null)
{
deliveryId =
((ReceivingLinkEndpoint)endpoint).getLastDeliveryId();
}
Delivery delivery = _incomingUnsettled.get(deliveryId);
if(delivery == null)
{
delivery = new Delivery(transfer, endpoint);
_incomingUnsettled.put(deliveryId,delivery);
if(delivery.isSettled() ||
Boolean.TRUE.equals(transfer.getAborted()))
{
/*
_availableIncomingCredit++;
*/
}
if(Boolean.TRUE.equals(transfer.getMore()))
{
((ReceivingLinkEndpoint)endpoint).setLastDeliveryId(transfer.getDeliveryId());
}
}
else
{
if(delivery.getDeliveryId().equals(deliveryId))
{code}
When the error occurs it is because this line returns a null value:
{code}
deliveryId = ((ReceivingLinkEndpoint)endpoint).getLastDeliveryId();
{code}
which may then lead to the map having a key value that is null:
{code}
_incomingUnsettled.put(deliveryId,delivery);
{code}
which leads to the NPE here:
{code}
if(delivery.getDeliveryId().equals(deliveryId))
{code}
However, it seems that having a null value as the key is legitimate as it is
explicitly done here:
{code}
((ReceivingLinkEndpoint)endpoint).setLastDeliveryId(null);
{code}
so I am not sure whether the problem lies in the client or not.
was (Author: aken):
I am hitting this issue for messages that are far smaller: around the 100-150KB
mark. I am using EventHub as my input and it looks as though the issue here in
SessionEndpoint:
{code}
if(endpoint == null)
{
//TODO - error unknown link
System.err.println("Unknown endpoint " + transfer);
}
UnsignedInteger deliveryId = transfer.getDeliveryId();
if(deliveryId == null)
{
deliveryId =
((ReceivingLinkEndpoint)endpoint).getLastDeliveryId();
}
Delivery delivery = _incomingUnsettled.get(deliveryId);
if(delivery == null)
{
delivery = new Delivery(transfer, endpoint);
_incomingUnsettled.put(deliveryId,delivery);
if(delivery.isSettled() ||
Boolean.TRUE.equals(transfer.getAborted()))
{
/*
_availableIncomingCredit++;
*/
}
if(Boolean.TRUE.equals(transfer.getMore()))
{
((ReceivingLinkEndpoint)endpoint).setLastDeliveryId(transfer.getDeliveryId());
}
}
else
{
if(delivery.getDeliveryId().equals(deliveryId))
{code}
When the error occurs it is because this line returns a null value:
{code}
deliveryId = ((ReceivingLinkEndpoint)endpoint).getLastDeliveryId();
{code}
which may then lead to the map having a key value that is null:
{code}
_incomingUnsettled.put(deliveryId,delivery);
{code}
which leads to the NPE here:
{code}
if(delivery.getDeliveryId().equals(deliveryId))
{code}
> 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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