ConcurrentModificationException during nodetool repair
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Key: CASSANDRA-3400
URL: https://issues.apache.org/jira/browse/CASSANDRA-3400
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 0.8.7
Environment: Suse Enterprise linux 11.4
Reporter: Scott Fines
Priority: Minor
When running a nodetool repair, the following exception can be thrown:
ERROR [AntiEntropySessions:12] 2011-10-24 11:17:52,154
AbstractCassandraDaemon.java (line 139) Fatal exception in thread
Thread[AntiEntropySessions:12,5,RMI Runtime]
java.lang.RuntimeException: 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$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$KeyIterator.next(HashMap.java:828)
at
org.apache.cassandra.service.AntiEntropyService$RepairSession$RepairJob.sendTreeRequests(AntiEntropyService.java:784)
at
org.apache.cassandra.service.AntiEntropyService$RepairSession.runMayThrow(AntiEntropyService.java:680)
at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
... 6 more
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