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From Daniel Miranda <dan...@cobli.co>
Subject Re: Assertions being hit on Cassandra 3.5 cluster (UnfilteredRowIterators.concat)
Date Wed, 22 Mar 2017 17:33:47 GMT
Thank you for the pointer Michael, I'll try to investigate if this is the
same bug I am seeing.

I am afraid it might not be, since I'm observing the error periodically,
not just during compactions, and the traceback seems different.

Regards,
Daniel

On Wed, Mar 22, 2017 at 1:27 PM Michael Shuler <michael@pbandjelly.org>
wrote:

Possibly https://issues.apache.org/jira/browse/CASSANDRA-12336, which
shows fixed in 3.0.9, 3.8. There are a couple related bug reports listed
on there, which you might investigate, as well.

--
Kind regards,
Michael

On 03/22/2017 11:21 AM, Daniel Miranda wrote:
> Greetings,
>
> Recently I've started to see the an assertion (traceback follows at the
> end of the message) causing exceptions in a 3-node Cassandra 3.5 cluster
> (running on Ubuntu 14.04 on Amazon EC2). It seems to happen in all
> nodes. Repairs run fine without indicating any errors.
>
> I can't seem to find any information about it from someone else or any
> bug reports.
>
> Should I bother running an SSTable scrub? Is it a known issue that is
> fixed in subsequent versions?
>
> Thanks in advance,
> Daniel
>
> ---
> WARN  [SharedPool-Worker-1] 2017-03-16 18:54:35,587
> AbstractLocalAwareExecutorService.java:169 - Uncaught exception on
> thread Thread[SharedPool-Worker-1,5,main]: {}
> java.lang.AssertionError: null
>         at
>
org.apache.cassandra.db.rows.UnfilteredRowIterators.concat(UnfilteredRowIterators.java:157)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
>
org.apache.cassandra.db.SinglePartitionReadCommand.getThroughCache(SinglePartitionReadCommand.java:420)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
>
org.apache.cassandra.db.SinglePartitionReadCommand.queryStorage(SinglePartitionReadCommand.java:324)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
> org.apache.cassandra.db.ReadCommand.executeLocally(ReadCommand.java:366)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
>
org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1797)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
>
org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2466)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_111]
>         at
>
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
> ~[apache-cassandra-3.5.jar:3.5]
>         at
>
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:136)
> [apache-cassandra-3.5.jar:3.5]
>         at
> org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
> [apache-cassandra-3.5.jar:3.5]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_111]
> --
> *Daniel Miranda*
>
> DevOps Engineering Intern
> (11) 991959845
> www.cobli.co <http://www.cobli.co/>

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