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From "Thibaut (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-4019) java.util.ConcurrentModificationException in Gossiper
Date Thu, 08 Mar 2012 10:48:57 GMT
java.util.ConcurrentModificationException in Gossiper
-----------------------------------------------------

                 Key: CASSANDRA-4019
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4019
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 0.8.9
            Reporter: Thibaut
            Priority: Minor


I have never seen this one before. Might be triggered by a race condition under heavy load.
This error was triggered on 0.8.9


ERROR [GossipTasks:1] 2012-03-05 04:16:55,263 Gossiper.java (line 162) Gossip error
java.util.ConcurrentModificationException
        at java.util.ArrayDeque$DeqIterator.next(ArrayDeque.java:605)
        at org.apache.cassandra.utils.AbstractStatsDeque.sum(AbstractStatsDeque.java:37)
        at org.apache.cassandra.utils.AbstractStatsDeque.mean(AbstractStatsDeque.java:60)
        at org.apache.cassandra.gms.ArrivalWindow.mean(FailureDetector.java:259)
        at org.apache.cassandra.gms.ArrivalWindow.phi(FailureDetector.java:282)
        at org.apache.cassandra.gms.FailureDetector.interpret(FailureDetector.java:155)
        at org.apache.cassandra.gms.Gossiper.doStatusCheck(Gossiper.java:538)
        at org.apache.cassandra.gms.Gossiper.access$700(Gossiper.java:57)
        at org.apache.cassandra.gms.Gossiper$GossipTask.run(Gossiper.java:157)
        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)
 INFO [GossipStage:1] 2012-03-05 04:16:55,263 Gossiper.java (line 737) Node /192.168.3.18
has restarted, now UP again
 INFO [GossipStage:1] 2012-03-05 04:16:55,264 Gossiper.java (line 705) InetAddress /192.168.3.18
is now UP


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