Paul Gregoire created DIRMINA-925:
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Summary: Unresponsive I/O once file limit is reached
Key: DIRMINA-925
URL: https://issues.apache.org/jira/browse/DIRMINA-925
Project: MINA
Issue Type: Bug
Components: Transport
Affects Versions: 2.0.7, 2.0.5, 2.0.4
Environment: Linux
Reporter: Paul Gregoire
I had this issue reported to the red5 issues list and it reminded me of an
issue on an internal company project that uses Mina but has nothing to do with
red5 itself. So the common part in these two cases now is Mina, so I am posting
this here.
The gist of both situations is that once the file limit is reached on the os,
mina still attempts to do its work but an exception occurs which eventually
runs the box of resources.
What steps will reproduce the problem?
1. Use telnet to connect to a servlet's socket until no more connections are
allowed (open files limit is reached)
2. Use telnet to connect to the tomcat port (5080)
3. Observe red5.logs shown below will repeat until the hard drive fills
java.io.IOException: Too many open files
at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
~[na:1.6.0_22]
at
sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:163)
~[na:1.6.0_22]
at
org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:170)
~[mi
na-core-2.0.4.jar:na]
at
org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:51)
~[min
a-core-2.0.4.jar:na]
at
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.processHandles(AbstractPolling
IoAcceptor.java:501) ~[mina-core-2.0.4.jar:na]
at
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run(AbstractPollingIoAcceptor.
java:442) ~[mina-core-2.0.4.jar:na]
at
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
[mina-core-2.0
.4.jar:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[na:1.6.0_22]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[na:1.6.0_22]
at java.lang.Thread.run(Thread.java:679) [na:1.6.0_22]
2012-12-13 15:42:28,521 [NioSocketAcceptor-2] WARN
o.a.m.util.DefaultExceptionMonitor - Unexpected exception.
Red5 issue #315 - Red5 gets into a tight loop writing error messages if file
open limit is exceeded
https://code.google.com/p/red5/issues/detail?id=315
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