Kristijan Postolov created HTTPCLIENT-2298:
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Summary: Requests reported as pending longer than expected
Key: HTTPCLIENT-2298
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2298
Project: HttpComponents HttpClient
Issue Type: Bug
Affects Versions: 5.2.1
Reporter: Kristijan Postolov
I was upgrading to the new httpclient5 (more specifically 5.2.1) and noticed an
issue where the StrictConnPool does not return accurate stats for the number of
pending request.
I created an httpClient with connectionRequestTimeout=2000 (2 seconds),
responseTimeout=12000 (12s) and maxConnTotal=1 on the
poolingHttpClientConnectionManager.
The connection request timeout works as expected, when I make a slow request
that runs for 10 seconds, and in the meantime I start a second one, the second
request will fail after 2 seconds, as there is no available connection.
However, after the 2 seconds, when the second connection throws a timeout
exception I check the
poolingHttpClientConnectionManager.getTotalStats().getPending(),
I am still receiving 1 (meaning there is one request that is waiting for a free
connection), even though this is not true since the request timed out after the
configured 2 seconds.
This number gets back to 0, only when the first connection is released (the
first 10 second request finishes). I checked the same behavior with the old
client (httpclient 4.5.14) and there the pending requests was decremented right
after the connection request timeout is reached.
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