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https://issues.apache.org/jira/browse/CASSANDRA-853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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gabriele renzi updated CASSANDRA-853:
-------------------------------------
Attachment: CASSANDRA-853.patch
> ConcurrentModificationException
> -------------------------------
>
> Key: CASSANDRA-853
> URL: https://issues.apache.org/jira/browse/CASSANDRA-853
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.6
> Reporter: B. Todd Burruss
> Assignee: Jonathan Ellis
> Fix For: 0.6
>
> Attachments: CASSANDRA-853.patch
>
>
> i'm seeing a lot of these ... any idea?
> 2010-03-04 18:53:21,455 ERROR [MEMTABLE-POST-FLUSHER:1]
> [DebuggableThreadPoolExecutor.java:94] Error in executor futuretask
> java.util.concurrent.ExecutionException: java.lang.RuntimeException:
> java.lang.RuntimeException: java.util.concurrent.ExecutionException:
> java.util.ConcurrentModificationException
> at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
> at java.util.concurrent.FutureTask.get(FutureTask.java:83)
> at
> org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor.afterExecute(DebuggableThreadPoolExecutor.java:86)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:888)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
> java.util.concurrent.ExecutionException:
> java.util.ConcurrentModificationException
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:34)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> ... 2 more
> Caused by: java.lang.RuntimeException:
> java.util.concurrent.ExecutionException:
> java.util.ConcurrentModificationException
> at
> org.apache.cassandra.db.commitlog.CommitLog.discardCompletedSegments(CommitLog.java:357)
> at
> org.apache.cassandra.db.ColumnFamilyStore$2.runMayThrow(ColumnFamilyStore.java:392)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> ... 6 more
> Caused by: java.util.concurrent.ExecutionException:
> java.util.ConcurrentModificationException
> at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
> at java.util.concurrent.FutureTask.get(FutureTask.java:83)
> at
> org.apache.cassandra.db.commitlog.CommitLog.discardCompletedSegments(CommitLog.java:349)
> ... 8 more
> Caused by: java.util.ConcurrentModificationException
> at java.util.ArrayDeque$DeqIterator.next(ArrayDeque.java:605)
> at
> org.apache.cassandra.db.commitlog.CommitLog.discardCompletedSegmentsInternal(CommitLog.java:385)
> at
> org.apache.cassandra.db.commitlog.CommitLog.access$300(CommitLog.java:71)
> at
> org.apache.cassandra.db.commitlog.CommitLog$6.call(CommitLog.java:343)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> org.apache.cassandra.db.commitlog.CommitLogExecutorService.process(CommitLogExecutorService.java:113)
> at
> org.apache.cassandra.db.commitlog.CommitLogExecutorService.access$200(CommitLogExecutorService.java:35)
> at
> org.apache.cassandra.db.commitlog.CommitLogExecutorService$1.runMayThrow(CommitLogExecutorService.java:67)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> ... 1 more
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