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Posted to user@accumulo.apache.org by Cyrille Savelief <cs...@gmail.com> on 2017/02/07 14:39:10 UTC
Zookeeper Exception
Hi,
Since a few weeks, we are having the following recurring warnings (tens of
megabytes) :
02-07-2017 15:17:39 - WARN - org.apache.zookeeper.ClientCnxn run - Session
0x159d0669ef70043 for server 10.91.176.82/10.91.176.82:2181, unexpected
error, closing socket connection and attempting reconnect
java.lang.IllegalStateException: Can't overwrite cause with
java.lang.IllegalStateException: Illegal access: this web application
instance has been stopped already. Could not load
org.apache.zookeeper.proto.SetWatches. The eventual following stack trace
is caused by an error thrown for debugging purposes as well as to attempt
to terminate the thread which caused the illegal access, and has no
functional impact.
at java.lang.Throwable.initCause(Throwable.java:457)
at
org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1305)
at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1185)
at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1146)
at
org.apache.zookeeper.ClientCnxn$SendThread.primeConnection(ClientCnxn.java:926)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:363)
at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
Caused by: java.lang.ClassNotFoundException
at
org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1304)
... 5 more
Apart from this warning, we have no other errors in the log and everything
is running fine. Do you have any idea where it might come from ?
Best,
Cyrille SAVELIEF
��Z7�>� 4��
Re: Zookeeper Exception
Posted by Cyrille Savelief <cs...@gmail.com>.
It solved our problem. Thank you !
Le mar. 7 févr. 2017 à 16:02, Keith Turner <ke...@deenlo.com> a écrit :
> Accumulo has some static resources that can cause problems for web
> applications. You could try calling CleanUp.shutdownNow() [1] before
> the container unloads the web app.
>
> [1]:
> https://github.com/apache/accumulo/blob/rel/1.7.2/core/src/main/java/org/apache/accumulo/core/util/CleanUp.java#L36
>
> On Tue, Feb 7, 2017 at 9:39 AM, Cyrille Savelief <cs...@gmail.com>
> wrote:
> > Hi,
> >
> >
> >
> > Since a few weeks, we are having the following recurring warnings (tens
> of
> > megabytes) :
> >
> >
> >
> > 02-07-2017 15 <02%2007%2020%2017%2015>:17:39 - WARN -
> org.apache.zookeeper.ClientCnxn run - Session
> > 0x159d0669ef70043 for server 10.91.176.82/10.91.176.82:2181, unexpected
> > error, closing socket connection and attempting reconnect
> >
> > java.lang.IllegalStateException: Can't overwrite cause with
> > java.lang.IllegalStateException: Illegal access: this web application
> > instance has been stopped already. Could not load
> > org.apache.zookeeper.proto.SetWatches. The eventual following stack
> trace
> > is caused by an error thrown for debugging purposes as well as to
> attempt to
> > terminate the thread which caused the illegal access, and has no
> functional
> > impact.
> >
> > at java.lang.Throwable.initCause(Throwable.java:457)
> >
> > at
> >
> org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1305)
> >
> > at
> >
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1185)
> >
> > at
> >
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1146)
> >
> > at
> >
> org.apache.zookeeper.ClientCnxn$SendThread.primeConnection(ClientCnxn.java:926)
> >
> > at
> >
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:363)
> >
> > at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
> >
> > Caused by: java.lang.ClassNotFoundException
> >
> > at
> >
> org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1304)
> >
> > ... 5 more
> >
> >
> >
> > Apart from this warning, we have no other errors in the log and
> everything
> > is running fine. Do you have any idea where it might come from ?
> >
> >
> >
> > Best,
> >
> >
> >
> > Cyrille SAVELIEF
> >
> > ��Z7�>� 4��
>
Re: Zookeeper Exception
Posted by Keith Turner <ke...@deenlo.com>.
Accumulo has some static resources that can cause problems for web
applications. You could try calling CleanUp.shutdownNow() [1] before
the container unloads the web app.
[1]: https://github.com/apache/accumulo/blob/rel/1.7.2/core/src/main/java/org/apache/accumulo/core/util/CleanUp.java#L36
On Tue, Feb 7, 2017 at 9:39 AM, Cyrille Savelief <cs...@gmail.com> wrote:
> Hi,
>
>
>
> Since a few weeks, we are having the following recurring warnings (tens of
> megabytes) :
>
>
>
> 02-07-2017 15:17:39 - WARN - org.apache.zookeeper.ClientCnxn run - Session
> 0x159d0669ef70043 for server 10.91.176.82/10.91.176.82:2181, unexpected
> error, closing socket connection and attempting reconnect
>
> java.lang.IllegalStateException: Can't overwrite cause with
> java.lang.IllegalStateException: Illegal access: this web application
> instance has been stopped already. Could not load
> org.apache.zookeeper.proto.SetWatches. The eventual following stack trace
> is caused by an error thrown for debugging purposes as well as to attempt to
> terminate the thread which caused the illegal access, and has no functional
> impact.
>
> at java.lang.Throwable.initCause(Throwable.java:457)
>
> at
> org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1305)
>
> at
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1185)
>
> at
> org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1146)
>
> at
> org.apache.zookeeper.ClientCnxn$SendThread.primeConnection(ClientCnxn.java:926)
>
> at
> org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:363)
>
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
>
> Caused by: java.lang.ClassNotFoundException
>
> at
> org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1304)
>
> ... 5 more
>
>
>
> Apart from this warning, we have no other errors in the log and everything
> is running fine. Do you have any idea where it might come from ?
>
>
>
> Best,
>
>
>
> Cyrille SAVELIEF
>
> ��Z7�>� 4��