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https://jira.jboss.org/jira/browse/JBMESSAGING-1763?page=com.atlassian.ji...
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mingjun jiang commented on JBMESSAGING-1763:
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https://jira.jboss.org/jira/browse/JBMESSAGING-1268
https://jira.jboss.org/jira/browse/JBREM-947
https://jira.jboss.org/jira/browse/JBREM-949
In the JBREM-947 and JBREM-949, the remoting wrongly depend on the socket timeout for
failure detection, the bug reporter said 'Remoting should not be dependent on the
socket timeout for failure detection, the connetion validation and socket timeout should
be possible to be configured separately'. According to the JIRA, this issue had been
fixed in Remoting 2.2.2. SP8 and 2.4.0.CR2 (Pinto), since it is said 'JBREM-947 - is
the proper fix in remoting which will allow us to configure timeouts and validation
interval separately'. (stated in JBMESSAGING-1268)
However, according to our test, this issue was not fixed properly. We suspect the Remoting
2.2.3 still wrongly depend on the socket timeout for failure connection detection. So, we
tried to change the timeout of bisocket transport from 0 (infinite) to a lower value e.g.
10 seconds, then we repeat the test steps again and observe the jboss web console,
fortunately, we found the failure connection will be closed after 10 seconds. In
JBREM-947, a daemon thread and validatorPingTimeout parameter are mentioned, we think
daemon thread should use parameter validatorPingPeriod and validatorPingTimeout to close
the failure connection instead of socket timeout.
Bisocket connection won't be closed if pulling out the ethernet
cable between client and server. The failure detection code won't close the failure
connection, as a result, the subsequent requests will hang after connection account
exceeds the threshold
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Key: JBMESSAGING-1763
URL:
https://jira.jboss.org/jira/browse/JBMESSAGING-1763
Project: JBoss Messaging
Issue Type: Bug
Components: JMS Remoting
Affects Versions: 1.4.5.GA, 1.4.6.GA
Environment: OS: Windows Server 2003. JBoss App Server 4.2.3.GA, JBoss Messaging
1.4.5 GA, JBoss Remoting 2.2.3 SP1
Reporter: mingjun jiang
Assignee: Howard Gao
Fix For: 1.4.6.GA.SP1, 1.4.7.GA
We are using JBoss App Server 4.2.3.GA, JBoss Messaging 1.4.5 GA and JBoss Remoting 2.2.3
SP1. In our application, there are a lot of Message listeners running on the client side,
these message listeners will receive messages from queue/topic deployed in JBoss Messaging
Configuration:
We created our own JMS Connection factory which uses the default remoting connector. As
you know, the default remoting connector is configured to use the bisocket transport. We
didn't change the default value of the remoting connector
During we run our application, we open the JBoss web console to monitor the value of
currentClientPoolSize under "Jboss.remoting" JMX MBean.
How to reproduce this issue:
1. Run 5 message listeners in the client side to receive messages from JBoss Messaging,
then we observe the value of currentClientPoolSize is 10
2. After processing several messages, we manually pull out the ethernet cable. The value
of currentClientPoolSize is still 10.
3. We run another 5 message listeners in client side, then the value of
currentClientPoolSize will become 20
4. After we do the same operations above several times, the value of
currentClientPoolSize will increase continuously. Once the value of currentClientPoolSize
is equal to the MaxPoolSize, then the subsequent incoming client requests will hang, and
we will encounter the following exception in server side
2009-10-20 18:08:09,655 ERROR [org.jboss.remoting.transport.socket.ServerThread]
Worker thread initialization failure
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:168)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read(BufferedInputStream.java:235)
at java.io.FilterInputStream.read(FilterInputStream.java:66)
at
org.jboss.remoting.transport.socket.ServerThread.readVersion(ServerThread.java:859)
at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:545)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:406)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:173)
Conclusion: JBoss Messaging won't close the failure connections if they are caused by
manually pulling out ethernet cable. As a result, the value of currentClientPoolSize will
increase continuously and finally the new client requests will hang
Note: If we killed the process of message listener in client side, then the value of
currentClientPoolSize will decrease to 0 immediately, it seems that the server could
detect the failure connection and perform the corresponding resource releasing.
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