[DIRMINA-989] Frequent CancelledKeyException

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.8
• Fix Version/s: 2.0.9
• Component/s: Core
• Environment: Debian 7.6 x86_64, JRE 1.7.0_67
• Assignee: Unassigned
• Reporter: Hidden
• Created: 12/Oct/14 20:47
• Updated: 07/Nov/19 01:34
• Resolved: 12/Oct/14 21:26

Description

I was told by Mr. Lécharny to post this here so that it can be linked in a changelog.

Since we've updated to MINA 2.0.8, we've been getting this exception every few minutes:
java.nio.channels.CancelledKeyException
at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:77)
at org.apache.mina.transport.socket.nio.NioProcessor.setInterestedInWrite(NioProcessor.java:287)
at org.apache.mina.transport.socket.nio.NioProcessor.setInterestedInWrite(NioProcessor.java:45)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.flushNow(AbstractPollingIoProcessor.java:880)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.flush(AbstractPollingIoProcessor.java:778)
at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$700(AbstractPollingIoProcessor.java:67)
at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1126)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

It only occurs in a production environment when there are many clients.