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https://issues.apache.org/jira/browse/HTTPCLIENT-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14102047#comment-14102047
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Christopher Brown commented on HTTPCLIENT-1495:
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I've tested the fix as of 4.3.5, and it seems fine. No more [Finalizer] thread
log messages, all messages seem to be logged by the expected thread at the
expected time.
Thanks.
> Finalizer in PoolingHttpClientConnectionManager should not log "shutdown"
> messages if already shutdown normally
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1495
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1495
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Components: HttpConn
> Affects Versions: 4.3.1
> Reporter: Christopher Brown
> Priority: Minor
> Fix For: 4.3.4, 4.4 Alpha1
>
>
> Despite shutting down the CloseableHttpClient instance using "close()", which
> in turn calls shutdown() on the PoolingHttpClientConnectionManager, messages
> are still logged such as the following in all cases after a JVM garbage
> collection:
> [Finalizer] DEBUG o.a.h.i.c.PoolingHttpClientConnectionManager - Connection
> manager is shutting down
> The finalizer thread always calls "shutdown", which always logs the
> "shutdown" messages. This led me to believe (when tracking memory leaks)
> that there was a problem in my usage of HTTP client, when in fact the message
> was just misleading (everything was fine).
> It would be preferable, perhaps via a volatile boolean instance field on the
> connection manager, to suppress the shutdown messages (and maybe even
> suppress redundant resource cleanup attempts). This would help users of the
> library to concentrate on other issues.
> Thanks.
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