hi all,

I'm connecting to zookeeper 3.3.3 from tomcat. and caught some weird
logging recently after running some task that forks and joins threads many
times.  after the task completed, zookeeper starts to give strange
loggings. The server still got very high load on both CPUs but 0% on
processes. memory usage is stable but virtual memory size kept growing (but
not causing any problem)..
The log shows like this once a few seconds.

9:09:51,748         INFO ClientCnxn:1155 - Unable to reconnect to ZooKeeper
service, session 0x13a9e07caa815fe has expired, closing socket connection
2012-10-29 19:09:51,347
[main-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-Event

Are you sure you're running 3.3.3 client? A fix went into the 3.3.2
client that should have fixed the naming issue, I don't see how you'd
circumvent that, if you were indeed running 3.3.2. See this:

https://issues.apache.org/jira/browse/ZOOKEEPER-795?focusedCommentId=12883316&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12883316

Patrick

2012/10/29 Yuhan Zhang <[EMAIL PROTECTED]>:
> hi all,
>
> I'm connecting to zookeeper 3.3.3 from tomcat. and caught some weird
> logging recently after running some task that forks and joins threads many
> times.  after the task completed, zookeeper starts to give strange
> loggings. The server still got very high load on both CPUs but 0% on
> processes. memory usage is stable but virtual memory size kept growing (but
> not causing any problem)..
>
>
> The log shows like this once a few seconds.
>
> 9:09:51,748         INFO ClientCnxn:1155 - Unable to reconnect to ZooKeeper
> service, session 0x13a9e07caa815fe has expired, closing socket connection
> 2012-10-29 19:09:51,347
> [main-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread

Hi Patrick,

yes. I got this from Release 3.3.3 - 2011-02-23

looks like my zookeeper is out of date, too. I will upgrade zookeeper up to
date.
Thank you.

Yuhan

2012/10/30 Patrick Hunt <[EMAIL PROTECTED]>

> Are you sure you're running 3.3.3 client? A fix went into the 3.3.2
> client that should have fixed the naming issue, I don't see how you'd
> circumvent that, if you were indeed running 3.3.2. See this:
>
>
> https://issues.apache.org/jira/browse/ZOOKEEPER-795?focusedCommentId=12883316&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12883316
>
> Patrick
>
> 2012/10/29 Yuhan Zhang <[EMAIL PROTECTED]>:
> > hi all,
> >
> > I'm connecting to zookeeper 3.3.3 from tomcat. and caught some weird
> > logging recently after running some task that forks and joins threads
> many
> > times.  after the task completed, zookeeper starts to give strange
> > loggings. The server still got very high load on both CPUs but 0% on
> > processes. memory usage is stable but virtual memory size kept growing
> (but
> > not causing any problem)..
> >
> >
> > The log shows like this once a few seconds.
> >
> > 9:09:51,748         INFO ClientCnxn:1155 - Unable to reconnect to
> ZooKeeper
> > service, session 0x13a9e07caa815fe has expired, closing socket connection
> > 2012-10-29 19:09:51,347
> >
> [main-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThread-EventThre