[
https://issues.apache.org/jira/browse/QPID-6672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Keith Wall updated QPID-6672:
-----------------------------
Description:
There is a race between the dispatcher thread and another thread closing a
session. In the unlucky case, the dispatcher thread can die with an ISE as
below.
The issue appears to be that the Dispatcher#close method does not await the
shutdown for the dispatcher before returning, so the Dispatcher may run on for
another iteration whilst the dispatcher reference has been nulled.
This appears to be a longstanding issue (the fixme goes back to 2007) and is
showing up now owing to r1693225, which makes uncaught exceptions fail the test.
{noformat}
2015-07-29 18:16:37,498 ERROR [Dispatcher-4-Conn-32]
o.a.q.t.LoggingUncaughtExceptionHandler Uncaught exception in thread
"Dispatcher-4-Conn-32"
java.lang.IllegalStateException: dispatcher is not started
at org.apache.qpid.client.AMQSession.dispatch(AMQSession.java:3267)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at
org.apache.qpid.client.message.UnprocessedMessage.dispatch(UnprocessedMessage.java:54)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at
org.apache.qpid.client.AMQSession$Dispatcher.run(AMQSession.java:3408)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_67]
{noformat}
was:
There is a race between the dispatcher thread and another thread closing a
session. In the unlucky case, the dispatcher thread can die with an ISE as
below.
The issue appears to be that the Dispatcher#close method does not await the
shutdown for the dispatcher before returning, so the Dispatcher may run on for
another iteration whilst the dispatcher reference has been nulled.
This appears to be a longstanding issue and is showing up now owing to
r1693225, which makes uncaught exceptions fail the test.
{noformat}
2015-07-29 18:16:37,498 ERROR [Dispatcher-4-Conn-32]
o.a.q.t.LoggingUncaughtExceptionHandler Uncaught exception in thread
"Dispatcher-4-Conn-32"
java.lang.IllegalStateException: dispatcher is not started
at org.apache.qpid.client.AMQSession.dispatch(AMQSession.java:3267)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at
org.apache.qpid.client.message.UnprocessedMessage.dispatch(UnprocessedMessage.java:54)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at
org.apache.qpid.client.AMQSession$Dispatcher.run(AMQSession.java:3408)
~[qpid-client-6.0.0-SNAPSHOT.jar:na]
at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_67]
{noformat}
> Message dispatching after dispatcher close can cause thread to terminate with
> IllegalStateException
> ---------------------------------------------------------------------------------------------------
>
> Key: QPID-6672
> URL: https://issues.apache.org/jira/browse/QPID-6672
> Project: Qpid
> Issue Type: Bug
> Components: Java Client
> Reporter: Keith Wall
>
> There is a race between the dispatcher thread and another thread closing a
> session. In the unlucky case, the dispatcher thread can die with an ISE as
> below.
> The issue appears to be that the Dispatcher#close method does not await the
> shutdown for the dispatcher before returning, so the Dispatcher may run on
> for another iteration whilst the dispatcher reference has been nulled.
> This appears to be a longstanding issue (the fixme goes back to 2007) and is
> showing up now owing to r1693225, which makes uncaught exceptions fail the
> test.
> {noformat}
> 2015-07-29 18:16:37,498 ERROR [Dispatcher-4-Conn-32]
> o.a.q.t.LoggingUncaughtExceptionHandler Uncaught exception in thread
> "Dispatcher-4-Conn-32"
> java.lang.IllegalStateException: dispatcher is not started
> at org.apache.qpid.client.AMQSession.dispatch(AMQSession.java:3267)
> ~[qpid-client-6.0.0-SNAPSHOT.jar:na]
> at
> org.apache.qpid.client.message.UnprocessedMessage.dispatch(UnprocessedMessage.java:54)
> ~[qpid-client-6.0.0-SNAPSHOT.jar:na]
> at
> org.apache.qpid.client.AMQSession$Dispatcher.run(AMQSession.java:3408)
> ~[qpid-client-6.0.0-SNAPSHOT.jar:na]
> at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_67]
> {noformat}
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