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From Sam Crawford <samcrawf...@gmail.com>
Subject Re: ConnectionPoolTimeoutException
Date Fri, 22 Jul 2011 12:54:34 GMT
My experience leads me to agree with Oleg. I would suggest adding
logging for connection management (see
http://hc.apache.org/httpcomponents-client-ga/logging.html).

Make sure you're always consuming the content when handling responses.
When I first began working with HttpClient I was aborting our response
handling process if I saw a non-2xx/3xx response code *without*
consuming the response - this led to the connection not being evicted.

Thanks,

Sam


On 22 July 2011 13:26, Oleg Kalnichevski <olegk@apache.org> wrote:
> On Thu, 2011-07-21 at 18:47 +0000, Fang Lin wrote:
>> Often getting org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting
for connection
>>         at org.apache.http.impl.conn.tsccm.ConnPoolByRoute.getEntryBlocking(ConnPoolByRoute.java:417)
>>         at org.apache.http.impl.conn.tsccm.ConnPoolByRoute$1.getPoolEntry(ConnPoolByRoute.java:300)
>>         at org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager$1.getConnection(ThreadSafeClientConnManager.java:224)
>>         at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:391)
>>         at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
>> when there were only two active connections in a ConnPoolByRoute whose  max connection
is set to 10.
>> This case happened with some routes but not all routes. Once it started, only restarting
tomcat would fix the issue.
>> Any suggestion?
>>
>>
>> Httpclient 4.1.1, httpcore 4.1.2
>>
>> Java(TM) SE Runtime Environment (build 1.6.0_23-b05) Java HotSpot(TM) 64-Bit Server
VM (build 19.0-b09, mixed mode)
>>
>
> I suspect your code is leaking connections.
>
> Oleg
>
>
>
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