Fwd: WARN [SharedPool-Worker-3] AbstractTracingAwareExecutorService.java

2016-10-18 Thread James Joseph
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$RunnableAdapter.call(Unknown
Source) ~[na:1.8.0_92]
  at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorSe
rvice$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.


WARN [SharedPool-Worker-3] AbstractTracingAwareExecutorService.java

2016-10-12 Thread James Joseph
I am seeing following warn in system.log, as a temporary turn around i can
increase 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$RunnableAdapter.call(Unknown
Source) ~[na:1.8.0_92]
  at
org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$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.


How to find the reason for mutation drops ??

2016-09-29 Thread James Joseph
I am seeing mutation drops on one of my nodes in the cluster, the load is
low no Gc pauses no wide partitions either, so can i debug what is the
reason for mutation drops ??

i ran nodetool tpstats only one node out of 9  is dropping rest 8 nodes in
the cluster are having 0 mutation drops.

How can i debug this ??


Thanks
James


when taking backups using snapshot if the sstable gets compacted will nodetool snapshot hung ??

2016-09-29 Thread James Joseph
Hai we are taking backups using nodetool snapshots but i occasionally see
that my script pauses  while taking a snapshot of a CF, is this because
when it is taking snapshot does the sstables got compacted to a different
one  so it couldn't find that particular sstable on which it is taking
snapshot so it pauses at that particular CF ??


Thanks
James.