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Posted to user@zookeeper.apache.org by César Álvarez Núñez <ce...@gmail.com> on 2011/03/14 20:00:21 UTC
Unexpected NodeCreated event after a reconnection.
Hi all,
Today I've observed a wrong behavior on our production environment that I
would like to share with you because I think that it is wrong.
One "zookeeper server" was consuming about 25% of CPU and its log only shows
lines like the following (as if it is was on some kind of loop):
2011-03-10 00:00:00,000 - WARN [NIOServerCxn.Factory:
0.0.0.0/0.0.0.0:2301:NIOServerCnxn$Factory@272][] - Ignoring unexpected
runtime exception
java.lang.NullPointerException
After its restart, two "zookeeper client" instances received a Disconnected
followed by a SyncConnected and several "NodeCreated" when those clients
never set a "create" watcher since they only invoke getData o getChildren
methods. That's why I think there is something wrong.
Furthermore after a content modification all the "zookeeper clients"
received a NodeDataChanged except for those which where connected previously
to restarted server.
The environment is: Solaris 10 + Zookeeper 3.3.2 + J6u17 64 bits.
Please let me known if there is some kind of information that I could
provide in order to perform some follow-up.
Br,
/César.
Re: Unexpected NodeCreated event after a reconnection.
Posted by Vishal Kher <vi...@gmail.com>.
Hi,
It might be worth opening a jira (with logs) explaining your setup and the
problems you are seeing.
2011/3/14 César Álvarez Núñez <ce...@gmail.com>
> Hi all,
>
> Today I've observed a wrong behavior on our production environment that I
> would like to share with you because I think that it is wrong.
>
> One "zookeeper server" was consuming about 25% of CPU and its log only
> shows
> lines like the following (as if it is was on some kind of loop):
>
> 2011-03-10 00:00:00,000 - WARN [NIOServerCxn.Factory:
> 0.0.0.0/0.0.0.0:2301:NIOServerCnxn$Factory@272][<http://0.0.0.0/0.0.0.0:2301:NIOServerCnxn$Factory@272%5D%5B>]
> - Ignoring unexpected
> runtime exception
> java.lang.NullPointerException
>
> After its restart, two "zookeeper client" instances received a Disconnected
> followed by a SyncConnected and several "NodeCreated" when those clients
> never set a "create" watcher since they only invoke getData o getChildren
> methods. That's why I think there is something wrong.
>
> Furthermore after a content modification all the "zookeeper clients"
> received a NodeDataChanged except for those which where connected
> previously
> to restarted server.
>
> The environment is: Solaris 10 + Zookeeper 3.3.2 + J6u17 64 bits.
>
> Please let me known if there is some kind of information that I could
> provide in order to perform some follow-up.
>
> Br,
> /César.
>