[jira] [Created] (CASSANDRA-6671) NoSuchElementException in trunk

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

Tyler Hobbs created CASSANDRA-6671:
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             Summary: NoSuchElementException in trunk
                 Key: CASSANDRA-6671
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6671
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Tyler Hobbs


When running {{cassandra-stress -o 10000000}} from {{cassandra-1.2}} against the latest trunk, I noticed this error in the system log:

{noformat}
ERROR 01:13:11 Exception in thread Thread[MutationStage:68,5,main]
java.lang.RuntimeException: java.util.NoSuchElementException
	at org.apache.cassandra.service.StorageProxy$LocalMutationRunnable.run(StorageProxy.java:2063) ~[main/:na]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) ~[na:1.7.0_40]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) ~[na:1.7.0_40]
	at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_40]
Caused by: java.util.NoSuchElementException: null
	at java.util.concurrent.ConcurrentLinkedDeque.screenNullResult(ConcurrentLinkedDeque.java:812) ~[na:1.7.0_40]
	at java.util.concurrent.ConcurrentLinkedDeque.getLast(ConcurrentLinkedDeque.java:963) ~[na:1.7.0_40]
	at org.apache.cassandra.utils.concurrent.WaitQueue.signalAll(WaitQueue.java:122) ~[main/:na]
	at org.apache.cassandra.utils.concurrent.OpOrder$Group.unlink(OpOrder.java:254) ~[main/:na]
	at org.apache.cassandra.utils.concurrent.OpOrder$Group.finishOne(OpOrder.java:209) ~[main/:na]
	at org.apache.cassandra.db.commitlog.CommitLogSegment$Allocation.markWritten(CommitLogSegment.java:581) ~[main/:na]
	at org.apache.cassandra.db.commitlog.CommitLog.add(CommitLog.java:231) ~[main/:na]
	at org.apache.cassandra.db.commitlog.CommitLog.add(CommitLog.java:193) ~[main/:na]
	at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:349) ~[main/:na]
	at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:328) ~[main/:na]
	at org.apache.cassandra.db.Mutation.apply(Mutation.java:205) ~[main/:na]
	at org.apache.cassandra.service.StorageProxy$7.runMayThrow(StorageProxy.java:997) ~[main/:na]
	at org.apache.cassandra.service.StorageProxy$LocalMutationRunnable.run(StorageProxy.java:2059) ~[main/:na]
	... 3 common frames omitted
{noformat}

I'm not sure what the implications are.



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