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From Ernesto Reinaldo Barreiro <reier...@gmail.com>
Subject Re: WARN org.apache.storm.zookeeper.server.persistence.FileTxnLog - fsync-ing the write ahead log in SyncThread:0 took 4702ms which will adversely effect operation latency. See the ZooKeeper troubleshooting guide
Date Tue, 16 Dec 2014 14:00:15 GMT
I'm new to storm but I was able to get rid of that by giving more memory to
my local cluster.

On Tue, Dec 16, 2014 at 1:53 PM, Denis DEBARBIEUX <ddebarbieux@norsys.fr>
wrote:
>
>  Dear all,
>
>  I am a new user of storm. I am writing a proof of concept with a very
> simple topology.
> I am using the local mode. When I run my application during 5 minutes, it
> is OK. But I am not able to run it during hours. Indeed, it always fails
> and stops with the following error (I enclosed the full stack strace):
>
>  WARN  org.apache.storm.zookeeper.server.persistence.FileTxnLog -
> fsync-ing the write ahead log in SyncThread:0 took 4702ms which will
> adversely effect operation latency. See the ZooKeeper troubleshooting guide
>
>  (...)
>
>  org.apache.zookeeper.server.NIOServerCnxn - caught end of stream
> exception
> org.apache.zookeeper.server.ServerCnxn$EndOfStreamException: Unable to
> read additional data from client sessionid 0x14a526c861a0003, likely client
> has closed socket
>
>  (...)
>
>  java.nio.channels.CancelledKeyException: null
>         at
> sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
>
>  (...)
>
>  There is a reference to  ZooKeeper troubleshooting guide. But I do not
> find any solution/workaround in it.
>
>  It looks like a problem in the logger of ZooKeeper. Is-it possible de
> disable it?
>
>  Any help is welcome.
>
>  *Denis DEBARBIEUX*
> norsysgroupe
>
>

-- 
Regards - Ernesto Reinaldo Barreiro

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