Thanks Doan, will try to enable slow query for app side and will let you
know if it helps or not.


Thanks
James.

On Wed, Oct 19, 2016 at 2:59 AM, DuyHai Doan <doanduy...@gmail.com> wrote:

> "which appilcation is trying to write large writes and to which keyspace
> and table it is trying to write ??"
>
> --> I don't think there is something such as audit trail for each CQL
> query.
>
> You may want to enable slow query logger on the client side (driver side)
> and bet on the fact that the queries with a huge payload are "slower" than
> normal queries ...
>
> On Tue, Oct 18, 2016 at 6:20 PM, James Joseph <jamesjjjosep...@gmail.com>
> wrote:
>
>>
>> I have seen the following warn in system.log, as a temporary turn around
>> i  increased commitlog_size in cassandra.yaml to 64, but how can i trace it
>> down ??? which appilcation is trying to write large writes and to which
>> keyspace and table it is trying to write ??
>>
>>
>> WARN  [SharedPool-Worker-3] 2016-10-05 03:46:22,363
>>  AbstractTracingAwareExecutorService.java:169 - Uncaught exception on
>> thread Thread[SharedPool-Worker-3,5,main]: {}
>> java.lang.IllegalArgumentException: Mutation of 19711728 bytes is too
>> large for the maxiumum size of 16777216
>>       at org.apache.cassandra.db.commitlog.CommitLog.add(CommitLog.java:221)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:383)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:363)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at org.apache.cassandra.db.Mutation.apply(Mutation.java:214)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at 
>> org.apache.cassandra.db.MutationVerbHandler.doVerb(MutationVerbHandler.java:54)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at 
>> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:64)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
>> Source) ~[na:1.8.0_92]
>>       at org.apache.cassandra.concurrent.AbstractTracingAwareExecutor
>> Service$FutureTask.run(AbstractTracingAwareExecutorService.java:164)
>> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105)
>> [cassandra-all-2.1.8.689.jar:2.1.8.689]
>>       at java.lang.Thread.run(Unknown Source) [na:1.8.0_92]
>>
>>
>> Thanks
>> James.
>>
>>
>

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