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From Nitay <nit...@gmail.com>
Subject Re: problems on EC2?
Date Wed, 15 Apr 2009 01:09:22 GMT
Hi Ted,

Fellow user coming from HBase. We were recently seeing lots of
SessionExpired events as well. Check out this mail thread:

http://markmail.org/search/?q=SessionExpired#query:SessionExpired+page:1+mid:gt4c2kn4n4f5s5kw+state:results

Perhaps this might have something to do with what you're seeing.

Cheers,
-n

On Tue, Apr 14, 2009 at 5:48 PM, Ted Dunning <ted.dunning@gmail.com> wrote:

> We have been using EC2 as a substrate for our search cluster with zookeeper
> as our coordination layer and have been seeing some strange problems.
>
> These problems seem to manifest around getting lots of anomalous
> disconnects
> and session expirations even though we have the timeout values set to 2
> seconds on the server side and 5 seconds on the client side.
>
> Has anybody else been seeing this?
>
> Is this related to clock jumps in a virtualized setting?
>
> On a related note, what is best practice for handling session expiration?
> Just deal with it as if it is a new start?
>

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