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From Denis DEBARBIEUX <ddebarbi...@norsys.fr>
Subject 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 13:53:39 GMT
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<div>Dear all,</div>
<div><br>
</div>
<div>I am a new user of storm. I am writing a proof of concept with a very simple topology.</div>
<div>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):</div>
<div><br>
</div>
<div>WARN &nbsp;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</div>
<div><br>
</div>
<div>(...)</div>
<div><br>
</div>
<div>org.apache.zookeeper.server.NIOServerCnxn - caught end of stream exception</div>
<div>org.apache.zookeeper.server.ServerCnxn$EndOfStreamException: Unable to read additional
data from client sessionid 0x14a526c861a0003, likely client has closed socket</div>
<div><br>
</div>
<div>(...)</div>
<div><br>
</div>
<div>java.nio.channels.CancelledKeyException: null</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)</div>
<div><br>
</div>
<div>(...)</div>
<div><br>
</div>
<div>There is a reference to&nbsp;<span style="font-size: 10pt;">&nbsp;</span><span
style="font-size: 10pt;">ZooKeeper troubleshooting guide.</span><span style="font-size:
10pt;">&nbsp;But I do not find any solution/workaround in it.&nbsp;</span></div>
<div><br>
</div>
<div>It looks like a problem in the logger of&nbsp;<font size="2">ZooKeeper.
Is-it possible de&nbsp;</font>disable&nbsp;<font size="2">it?</font></div>
<div><br>
</div>
<div>Any help is welcome.</div>
<div><br>
</div>
<div style="font-family:Tahoma; font-size:13px">
<div style="font-family:Tahoma; font-size:13px"><b>Denis DEBARBIEUX</b><br>
norsys<font color="C0C0C0">groupe</font><br>
<br>
</div>
</div>
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