Race condition on mongodb driver

[Tiago Albineli Motta]

Anybody knowa how to solve this problem?

"cluster-1-thread-2" - Thread t@66

   java.lang.Thread.State: BLOCKED

at com.mongodb.DefaultServer$DefaultServerStateListener.stateChanged(DefaultServer.java:112)

- waiting to lock <772e7c67> (a com.mongodb.DefaultServer$DefaultServerStateListener) owned by "cluster-1-thread-1" t@65

at com.mongodb.DefaultServer.invalidate(DefaultServer.java:87)

at com.mongodb.MultiServerCluster.invalidateOldPrimaries(MultiServerCluster.java:215)

at com.mongodb.MultiServerCluster.handleReplicaSetMemberChanged(MultiServerCluster.java:176)

at com.mongodb.MultiServerCluster.onChange(MultiServerCluster.java:130)

- locked <ce98b52> (a com.mongodb.MultiServerCluster)

at com.mongodb.MultiServerCluster.access$100(MultiServerCluster.java:39)

at com.mongodb.MultiServerCluster$DefaultServerStateListener.stateChanged(MultiServerCluster.java:104)

at com.mongodb.DefaultServer$DefaultServerStateListener.stateChanged(DefaultServer.java:114)

- locked <38b9bb1d> (a com.mongodb.DefaultServer$DefaultServerStateListener)

at com.mongodb.ServerStateNotifier.run(ServerStateNotifier.java:106)

- locked <5238b42d> (a com.mongodb.ServerStateNotifier)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

at java.lang.Thread.run(Thread.java:662)

   Locked ownable synchronizers:

- locked <8bd2087> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)

"cluster-1-thread-1" - Thread t@65

   java.lang.Thread.State: BLOCKED

at com.mongodb.MultiServerCluster.onChange(MultiServerCluster.java:114)

- waiting to lock <ce98b52> (a com.mongodb.MultiServerCluster) owned by "cluster-1-thread-2" t@66

at com.mongodb.MultiServerCluster.access$100(MultiServerCluster.java:39)

at com.mongodb.MultiServerCluster$DefaultServerStateListener.stateChanged(MultiServerCluster.java:104)

at com.mongodb.DefaultServer$DefaultServerStateListener.stateChanged(DefaultServer.java:114)

- locked <772e7c67> (a com.mongodb.DefaultServer$DefaultServerStateListener)

at com.mongodb.ServerStateNotifier.run(ServerStateNotifier.java:106)

- locked <38a2838c> (a com.mongodb.ServerStateNotifier)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)

at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

at java.lang.Thread.run(Thread.java:662)

   Locked ownable synchronizers:

- locked <356a7960> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)

[Ross Lawley]

Sorry for the delay in replying, I've not seen that before. 

Can you provide more information, what version of Casbah and mongodb?  Also, how are you running your Casbah code? Is that error easy to replicate?

Thanks,

Ross

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{ name     : "Ross  Lawley",

  title    : "Scala and Python Engineer",

  location : "London, UK",

  twitter  : ["@RossC0", "@MongoDB", "@MongoDBInc"],

  facebook : ["MongoDB", "MongoDB, Inc."] }

[Tiago Albineli Motta]

The problem is on mongodb java driver. I created an issue: 

https://jira.mongodb.org/browse/JAVA-1148

Seems that they fixed, but now im not using it anymore.

Thanks

Tiago Albineli Motta
Desenvolvedor de Software - Globo.com
ICQ: 32107100
http://programandosemcafeina.blogspot.com

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