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https://issues.apache.org/jira/browse/DERBY-5560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kathey Marsden updated DERBY-5560:
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Issue & fix info: High Value Fix,Patch Available (was: High Value Fix)
Brett has provided a patch and asked that it be committed. He has tested it in
production but has not been able to provide a regression test. Marking patch
available so the patch can be reviewed and possibly committed.
> Java deadlock between LogicalConnection40 and ClientXAConnection40
> ------------------------------------------------------------------
>
> Key: DERBY-5560
> URL: https://issues.apache.org/jira/browse/DERBY-5560
> Project: Derby
> Issue Type: Bug
> Components: Network Client
> Affects Versions: 10.8.2.2
> Environment: Solaris 10
> Glassfish V2.1.1
> ClientXADataSource connection pool setup to close all connections on any error
> Reporter: Brett Bergquist
> Labels: derby_triage10_9
> Attachments: DERBY-5560.patch
>
>
> There is a Java deadlock between LogicalConnection40 and
> ClientXAConnection40. The order of calls that cause the deadlock are:
> Thread 1
> ----
> LogicalConnection.close
> ClientPooledConnection.recycleConnection
> Thread 2
> ----
> ClientPooledConnection.close
> LogicalConnection.nullPhysicalConnection
> Thread 1 acquires a lock on the LogicalConnection and attempts to acquire a
> lock on the ClientPooledConnection
> Thread 2 acquires a lock on the ClientPooledConnection and attempts to
> acquire a lock on the LogicalConnection
> In production this occurs when one thread is committing a transaction and
> another thread is trying to close the connection. This occurred because the
> Glassfish connection pool is setup to close all connections on any error on
> any connection and an error has been detected on another connection in the
> pool.
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