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https://issues.apache.org/jira/browse/CASSANDRA-4019?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Brandon Williams updated CASSANDRA-4019:
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Attachment: 4019-trunk.txt
Patch for trunk which removes ASD since all we actually use is sum and mean and
consolidates it into BDS. Dsnitch's ALT is also removed since BDS itself
contains all the functionality it had before.
> 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
> Assignee: Brandon Williams
> Priority: Minor
> Fix For: 0.8.11
>
> Attachments: 4019-trunk.txt, 4019.txt
>
>
> 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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