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From Dimuthu Gamage <dimut...@gmail.com>
Subject Re: Getting a warning after calling MultiThreadedHttpConnectionManager.shutdown()
Date Thu, 25 Jun 2009 09:03:05 GMT
Hi Oleg,
Thank you for replying. I will check this with the HttpClient 4.0.

Thanks,
Dimuthu

On Wed, Jun 24, 2009 at 6:32 PM, Oleg Kalnichevski <olegk@apache.org> wrote:

> On Tue, Jun 23, 2009 at 10:24:36AM +0530, Dimuthu Gamage wrote:
> > Hi,
> > I'm using http-client version 3.1. I got a warning "HttpConnectionManager
> is
> > null.  Connection cannot be released." when I tried to shutdown
> > MultiThreadedHttpConnectionManager after doing a 'put' operation. (In
> fact
> > I'm using httpclient through abdera client, so this happens inside the
> > abdera client teardown() function.
> >
> > When I debug I found it hits the following lines inside,
> > MultiThreadedHttpConnectionManager.
> > shutdownCheckedOutConnections(ConnectionPool connectionPool)
> >
> >             connection.setHttpConnectionManager(null);
> >             connection.releaseConnection();
> >
> > Inside the first call it set this.httpConnectionManager = null and in the
> > second call, it has logic similar to this,
> >        if (httpConnectionManager != null) {
> >            // some stuff
> >        else {
> >             LOG.warn("HttpConnectionManager is null.  Connection cannot
> be
> > released.");
> >         }
> >
> > Does this do any harm to the behaviour of the shutdown operation, or
> should
> > I ignore calling it?
>
> This seems to be harmless, however it does represent an issue with
> HttpClient
> 3.x connection management code. I would strongly recommend upgrading to
> HttpClient 4.0
>
> > Is it fixed in newer versions?
> >
>
> HttpClient 4.0 has a very different and massively better connection
> management
> code, so most likely the issue is no longer there.
>
> Oleg
>
>
>
> > I would be greatful If you can answer these problems.
> >
> > --
> > Thanks in advance,
> > Dimuthu Gamage
> >
> > http://www.dimuthu.org
>
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-- 
Thanks,
Dimuthu Gamage

http://www.dimuthu.org
http://www.wso2.org

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