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https://issues.apache.org/jira/browse/CXF-9100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andriy Redko reassigned CXF-9100:
---------------------------------
Assignee: Andriy Redko
> HttpClient-1-Worker-* thread leak when throwing exception in
> LoggingOutInterceptor and sending large SOAP message
> -----------------------------------------------------------------------------------------------------------------
>
> Key: CXF-9100
> URL: https://issues.apache.org/jira/browse/CXF-9100
> Project: CXF
> Issue Type: Bug
> Components: logging, Transports
> Affects Versions: 4.0.4, 4.1.0, 3.6.5
> Reporter: Andrey
> Assignee: Andriy Redko
> Priority: Major
> Attachments: image-2025-01-13-12-39-07-688.png,
> image-2025-01-13-12-40-36-534.png
>
>
> Hello,
> After upgrading from 3.5.3 to 3.6+ (tried 3.6.5, 4.0.4, 4.1.0) we have
> noticed a HttpClient-1-Worker-* thread leak. Screenshots from VisualVM in
> attachments.
> How to reproduce:
> # register custom LogEventSender and LoggingOutInterceptor
> # throw any exception in send() method
> # send SOAP message with body >4kb (default chunkingThreshold value for
> HTTPConduit)
> # repeat previous step N times
> # watch HttpClient-1-Worker-* threads count grow till
> RejectedExecutionException for JDK17 or OutOfMemoryError for JDK21 after 3984
> (in my case) threads
> Possible workaround:
> Configure chunkingThreshold with greater value
> Example for Spring:
> {code:java}
> @Bean
> fun httpConduitConfigurer(): HTTPConduitConfigurer {
> return HTTPConduitConfigurer { _, _, conduit ->
> val httpClientPolicy = HTTPClientPolicy()
> httpClientPolicy.chunkingThreshold = 16384
> conduit.setClient(httpClientPolicy)
> }
> } {code}
>
> I wrote a demo project for this case:
> https://github.com/AndChelp/cxf-thread-leak
> You can run TestControllerTest#testCommonEndpoint and watch «HttpClient-1-*
> thread count: N» log. Or you can run it as Spring Application, send GET
> /common request and watch threads with any profiler.
> The project also has a configured workaround on /workaround endpoint and test
> for it
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