SocketAcceptor.unbind can hang when unbinding only one of several service
adresses
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Key: DIRMINA-722
URL: https://issues.apache.org/jira/browse/DIRMINA-722
Project: MINA
Issue Type: Bug
Affects Versions: 1.0.10
Environment: Centos 5.3, JDK 1.6.0u11
Reporter: Rhys Yarranton
If a SocketAcceptor
- has multiple service addresses bound and
- you unbind one of them and
- disconnectOnUnbind is true and
- the one being unbound has at least one session connected and
- some other session on the acceptor also has at least one session connected
the unbind call can hang. Excerpt from stack trace below.
I suspect the hang is coming from IoServiceListenerSupport.disconnectSessions.
The sessions to be closed are in the sessions variable, which is a subset of
managedSessions (line 280). However, at lines 306-309, it is waiting (forever)
for managedSessions to be empty. This will never happen.
This is 1..0.10. The 1.1.7 code is different (it uses a countdown latch), and
looks OK.
"JBoss Shutdown Hook" daemon prio=10 tid=0x00002aab00d5b800 nid=0x114a in
Object.wait() [0x00002aab23215000..0x00002aab23217c10]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:485)
at
org.apache.mina.transport.socket.nio.SocketAcceptor.unbind(SocketAcceptor.java:213)
- locked <0x00002aaab0370000> (a
org.apache.mina.transport.socket.nio.SocketAcceptor$CancellationRequest)
...
"SocketAcceptor-0" daemon prio=10 tid=0x00002aaafcd93000 nid=0x2ca in
Object.wait() [0x000000004cbc8000..0x000000004cbc8a10]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
at
org.apache.mina.common.support.IoServiceListenerSupport.disconnectSessions(IoServiceListenerSupport.java:308)
- locked <0x00002aaab0376670> (a java.lang.Object)
at
org.apache.mina.common.support.IoServiceListenerSupport.fireServiceDeactivated(IoServiceListenerSupport.java:165)
- locked <0x00002aaab5e783c8> (a
org.apache.mina.common.support.IoServiceListenerSupport)
at
org.apache.mina.transport.socket.nio.SocketAcceptor.cancelKeys(SocketAcceptor.java:470)
at
org.apache.mina.transport.socket.nio.SocketAcceptor.access$900(SocketAcceptor.java:53)
at
org.apache.mina.transport.socket.nio.SocketAcceptor$Worker.run(SocketAcceptor.java:251)
at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at java.lang.Thread.run(Thread.java:619)
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