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Posted to dev@qpid.apache.org by "Jakub Scholz (JIRA)" <ji...@apache.org> on 2016/03/04 17:18:40 UTC
[jira] [Created] (QPID-7127) [C++ broker] Setting large idle
timeout cause confuses timers in the C++ broker
Jakub Scholz created QPID-7127:
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Summary: [C++ broker] Setting large idle timeout cause confuses timers in the C++ broker
Key: QPID-7127
URL: https://issues.apache.org/jira/browse/QPID-7127
Project: Qpid
Issue Type: Bug
Components: C++ Broker
Affects Versions: qpid-cpp-0.34
Reporter: Jakub Scholz
I run into following problem. When I try to connect with SwiftMQ AMQP client (http://www.swiftmq.com/) to the Qpid C++ broker and don't specify idle timeout, it will use in64_max. The Qpid broker seems to be fine with it and opens the connection:
ConnectionDispatcher, , visit, po=[POOpen, containerId=356a476d-4678-4cfa-9680-8bf648b808d2@schojak, maxFrameSize=2147483647, maxChannel=255, idleTimeout=9223372036854775807]
ConnectionDispatcher, , visit, po=[POConnectionFrameReceived, frame=[Open containerId=91655fa5-80d3-4cd1-9a72-51b82e36de00, maxFrameSize=4294967295, channelMax=255, idleTimeOut=2147483647, offeredCapabilities=[ANONYMOUS-RELAY], properties=[product=qpid-cpp, platform=Linux, host=6a2d20e32f38, version=0.35]], sassl=false]
However, the timers in the broker get crazy from it and start raising milions of errors like this:
2016-03-04 15:55:40 [System] error ConnectionTicker couldn't setup next timer firing: 33.8867ms[0ns]
2016-03-04 15:55:40 [System] error ConnectionTicker couldn't setup next timer firing: 33.8937ms[0ns]
2016-03-04 15:55:40 [System] error ConnectionTicker couldn't setup next timer firing: 33.9006ms[0ns]
2016-03-04 15:55:40 [System] error ConnectionTicker couldn't setup next timer firing: 33.9076ms[0ns]
This seems to go on until the client disconnects or until the disk goes full. IT also seems to cause some secondary problems (perfomance, the affected client cannot close producer etc.)
The int64 idle timeout seems to be bug in the SwiftMQ client. But Qpid should definitely handle this better:
- Not open the connection when the indle timeout is invalid
- Make sure that the timer errors don't appear
The problem seems to be present in both 0.34 as well as in trunk.
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