[infinispan-issues] [JBoss JIRA] Commented: (ISPN-819) Deadlock detection seem to not detect deadlock case between two nodes on the same cache.

[Mircea Markus (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570410#comment-12570410 ] 

Mircea Markus commented on ISPN-819:
------------------------------------

Right, it's not clear to me what the problem is this time. If you don't get TimeoutException (but DeadlockDetectedException) then it's not a problem - it's expected behavior. Disregarding the number of nodes.

> Deadlock detection seem to not detect deadlock case between two nodes on the same cache.
> ----------------------------------------------------------------------------------------
>
>                 Key: ISPN-819
>                 URL: https://issues.jboss.org/browse/ISPN-819
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Locking and Concurrency
>    Affects Versions: 4.2.0.CR3
>         Environment: Windows XP, 4.2.0-CR3
>            Reporter: Thomas Jean
>            Assignee: Mircea Markus
>            Priority: Critical
>             Fix For: 4.2.0.CR4, 4.2.0.Final
>
>         Attachments: AgentManager_InfiniSpan_Config_Generic.xml, log4j_Generic.properties, nodeDeadLock-43429.log, nodeDeadLock-45547.log, testSetup.zip, ThreeNodesDeadlocks.java, TwoNodesDeadlocks.java
>
>
> Hello,
> after activating deadlock detection with 500 ms of spin duration, i launch a classic deadlock scenario.
> Node 1 acquire local lock.
> Node 1 try to acquire cluster wide lock.
> Node 2 acquire local lock.
> Node 2 try to acquire cluster wide lock. 
> Then deadlock is not detected and the TimeoutException occurs:
> org.infinispan.util.concurrent.TimeoutException: Unable to acquire lock after [20 seconds] on key [counter_key] for requestor [DldGlobalTrans
> action{coinToss=3136454835479173852, isMarkedForRollback=false, lockIntention=counter_key, affectedKeys=[counter_key], locksAtOrigin=[]} Glob
> alTransaction:<nodeDeadLock-11465>:5:local]! Lock held by [DldGlobalTransaction{coinToss=3164596253027655679, isMarkedForRollback=false, lock
> Intention=null, affectedKeys=[], locksAtOrigin=[]} GlobalTransaction:<nodeDeadLock-16603>:1:remote].
> I give my configuration file for ISPN and a Class TwoNodesDeadlocks.java  to reproduce the problem.

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