Guus der Kinderen created DIRMINA-1156:
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Summary: Inconsistent worker / idleWorker in
OrderedThreadPoolExecutor
Key: DIRMINA-1156
URL: https://issues.apache.org/jira/browse/DIRMINA-1156
Project: MINA
Issue Type: Bug
Reporter: Guus der Kinderen
I stumbled upon this while performing analysis of heap dumps of a JVMs that
suffered from an issue where no user was able to establish a connection to our
server software anymore.
Our application uses an ExecutorFilter. The OrderedThreadPoolExecutor of the
affected server seems to be in an inconsistent state:
* idleWorkers: 2
* waitingSessions.count: 2293
* workers.map.size: 0
What strikes me as odd is:
* No workers, while there are sessions waiting to be processed
* No workers, but a non-zero idle workers count
Servers that are unaffected by the issue have an idle worker count that is
equal to the amount of workers (I assume that the snapshots were taken when
that server was not actively processing data).
We are using Apache MINA 2.1.3. I have no indication that this problem is or is
not present in other versions.
This issue has also been discussed on the Apache MINA users mailinglist,
starting with this message:
https://www.mail-archive.com/[email protected]/msg06887.html
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