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From aaron morton <aa...@thelastpickle.com>
Subject Re: Assertions running Cleanup on a 3-node cluster with Cassandra 1.1.4 and LCS
Date Tue, 11 Sep 2012 02:48:12 GMT
> My question: Can these assertions be ignored? Or do I need to worry about it?
That looks like a problem.

Can you raise a ticket on https://issues.apache.org/jira/browse/CASSANDRA ?

May be good to include information on:
* how long you've been using Levelled Compaction.
* Is this all CF's or just one ?
* If you can identify the CF can you include the .json file that is kept on disk. It contains
information about levelled compaction. 

Cheers
  
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 11/09/2012, at 4:37 AM, Rudolf van der Leeden <rudolf.vanderleeden@scoreloop.com>
wrote:

> Hi,
> 
> I'm getting 5 identical assertions while running 'nodetool cleanup' on a Cassandra 1.1.4
node with Load=104G and 80m keys.
> From  system.log :
> 
> ERROR [CompactionExecutor:576] 2012-09-10 11:25:50,265 AbstractCassandraDaemon.java (line
134) Exception in thread Thread[CompactionExecutor:576,1,main]
> java.lang.AssertionError
>         at org.apache.cassandra.db.compaction.LeveledManifest.promote(LeveledManifest.java:214)
>         at org.apache.cassandra.db.compaction.LeveledCompactionStrategy.handleNotification(LeveledCompactionStrategy.java:158)
>         at org.apache.cassandra.db.DataTracker.notifySSTablesChanged(DataTracker.java:531)
>         at org.apache.cassandra.db.DataTracker.replaceCompactedSSTables(DataTracker.java:254)
>         at org.apache.cassandra.db.ColumnFamilyStore.replaceCompactedSSTables(ColumnFamilyStore.java:992)
>         at org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:200)
>         at org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50)
>         at org.apache.cassandra.db.compaction.CompactionManager$1.runMayThrow(CompactionManager.java:154)
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
>         at java.util.concurrent.Executors$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:662)
> 
> After 3 hours the job is done and there are 11390 compaction tasks pending.
> My question: Can these assertions be ignored? Or do I need to worry about it?
> 
> Thanks for your help and best regards,
> -Rudolf.
> 


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