Chuck Rolke created AMQ-5413:
--------------------------------
Summary: AMQP test client delivery/redelivery anomoly
Key: AMQ-5413
URL: https://issues.apache.org/jira/browse/AMQ-5413
Project: ActiveMQ
Issue Type: Bug
Components: AMQP, Broker
Affects Versions: 5.11.0
Environment: broker: snapshot
apache-activemq-5.11-20141022.222801-124-bin.tar.gz
Wed Oct 22 22:28:02 UTC 2014
host: Linux Fedora 19 x64
clients: Apache Qpid C++ messaging qpid-send qpid-receive (current trunk)
protocol: AMQP 1.0
Reporter: Chuck Rolke
Using Apache Qpid test clients qpid-send and qpid-receive ActiveMQ broker
behaves differently from qpidd and I'm wondering if the difference is important.
The test code command lines are:
{noformat}
qpid-send -a "chuck; {create:always}" --connection-options {protocol:amqp1.0}
--sequence yes --content-string 0
qpid-receive -a chuck -m 1 --connection-options "{protocol:amqp1.0}"
--print-headers yes
{noformat}
When I run the tests against qpidd they send one message and receive one
message every time. However against ActiveMQ 5.11 the qpid-receive does not
receive the message until one of several conditions:
* the qpid-receive command also includes "--timeout 1"
* the qpid-receive command is repeated several, possibly dozens, of times.
When qpidd broker is running or when activemq is running and --timeout is
specified then the qpid-receive output is:
{noformat}
chug@FJELD ~> qpid-receive -a chuck -m 1 --connection-options
"{protocol:amqp1.0}" --print-headers yes
Properties: {sn:1, ts:1414177685195174548, x-amqp-first-acquirer:True}
0
{noformat}
However, activemq running the client twice without the timeout and once with
the timeout looks like this:
{noformat}
chug@FJELD ~> qpid-receive -a chuck -m 1 --connection-options
"{protocol:amqp1.0}" --print-headers yes
chug@FJELD ~> qpid-receive -a chuck -m 1 --connection-options
"{protocol:amqp1.0}" --print-headers yes
chug@FJELD ~> qpid-receive -a chuck -m 1 --connection-options
"{protocol:amqp1.0}" --print-headers yes --timeout 1
Redelivered: true
Properties: {sn:1, ts:1414178091185765136, x-amqp-delivery-count:1}
0
{noformat}
The false receive attempts make the message look like it was already delivered,
hence the Redelivered: true, first-acquirer absent and the
x-amqp-delivery-count setting.
Views of the protocol interactions between the brokers and clients are here:
http://people.apache.org/~chug/adverb_qpid_send_receive_1/
I ran the tests twice on ActiveMQ with the tcpnodelay option turned on and off
but that didn't seem to make any difference.
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