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Subject: Re: Debugging help for SessionExpiredException
From: Jordan Zimmerman <jzimmerman@proofpoint.com>
In-Reply-To: <78A3B8B0-DD3C-4DF6-8B28-E868E990A92B@proofpoint.com>
Date: Tue, 15 Jun 2010 10:33:41 -0700
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To: zookeeper-user@hadoop.apache.org

More on this...

I ran last night with verbose GC on our client. I analyzed the GC log in =
gchisto and 99% of the GCs are 1 or 2 ms. The longest gc is 30 ms. On =
the Zookeeper server side, the longest gc is 130 ms. So, I submit, GC is =
not the problem. NOTE we're running on Amazon EC2.=20

-JZ

On Jun 9, 2010, at 11:36 AM, Jordan Zimmerman wrote:

> We have a test system using Zookeeper. There is a single Zookeeper =
server node and 4 clients. There is very little activity in this system. =
After a day's testing we start to see SessionExpiredException on the =
client. Things I've tried:
>=20
> * Increasing the session timeout to 1 minute
> * Making sure all JVMs are running in a 100MB partition
>=20
> Any help debugging this problem would be appreciated. What kind of =
diagnostics should can I add? Are there more config parameters that I =
should try?
>=20
> -JZ