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Posted to dev@hc.apache.org by "Carter Kozak (Jira)" <ji...@apache.org> on 2021/11/12 22:45:00 UTC
[jira] [Resolved] (HTTPCLIENT-2184) Leased Connection Leak after
upgrade to 5.1.1
[ https://issues.apache.org/jira/browse/HTTPCLIENT-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Carter Kozak resolved HTTPCLIENT-2184.
--------------------------------------
Resolution: Fixed
I've applied the fix to the master and 5.1.x branches. Thanks again for the quick review!
> Leased Connection Leak after upgrade to 5.1.1
> ---------------------------------------------
>
> Key: HTTPCLIENT-2184
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2184
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (classic)
> Affects Versions: 5.1.1
> Reporter: Carter Kozak
> Assignee: Carter Kozak
> Priority: Critical
> Fix For: 5.1.2
>
> Attachments: 2021-11-11_1095x517_screen.png
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Unfortunately I haven't had a chance to build a local reproducer yet, nor have I had a chance to profile a system experiencing this failure – I intend to add additional data to this ticket later on as I debug.
> I do have a system deployed where the issue does not reproduce on 5.1, but I can redeploy only changing the httpcomponents-client jar to 5.1.1 (no other transitive dependency changes, etc) and the leak appears. This should rule out bad application code as a root cause, I also have metrics which capture any time a response is not closed, which reports zero leaks in both cases.
> I have attached a graph of my connection pool leased-connections metric, the blue line in the middle represents the first version which took httpcomponents-client 5.1.1, where previously leased connections sat right around zero. There's a short gap after the blue line ends where we rolled back to the previous release, followed by a few smaller successful attempts to reproduce the issue resulting in large sets of leased connections.
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