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https://issues.apache.org/jira/browse/CXF-7116?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15636995#comment-15636995
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Sergey Beryozkin commented on CXF-7116:
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I've added a single synchronization block which fixes the issue. It is quite
hard to identify why exactly it is happening in case of the embedded Jetty
transport. I can only think of the spurious retries which this block protects
again.
FYI, in the case of using Jetty embedded transport, AsyncResponse is not 100%
feature complete, it is not built on top of the standard AsyncContext but on
Jetty specific Continuation API, and multiple timeouts (something one can do
with JAX-RS 2.0 TimeoutHandler) do not work in this case, Jetty would throw the
exceptions (see CXF JettyContinuationWrapper.reset()) - but admittedly multiple
timeouts is not a mainstream case.
Please give 3.1.9-SNAPSHOT a try next week
> AsyncResponse.resume() infinitely hangs up after first call
> -----------------------------------------------------------
>
> Key: CXF-7116
> URL: https://issues.apache.org/jira/browse/CXF-7116
> Project: CXF
> Issue Type: Bug
> Components: JAX-RS
> Affects Versions: 3.1.8
> Environment: * Java - 1.8.0_66 (build 1.8.0_66-b17)
> * CXF - 3.1.8
> * Jetty - 9.3.13.v20161014
> * OS - OS X El Capitan 10.11.6
> Reporter: Dmytro Khrystiuk
> Labels: async
> Fix For: 3.2.0, 3.1.9, 3.0.12
>
> Attachments: cxf-issue.zip
>
>
> Issue with AsyncResponse happened after upgrade from CXF 3.1.7 to 3.1.8.
> After the second call to REST method server stops to respond. Implementation
> of method uses AsyncResponse and call to resume() in a separate thread:
> @GET
> @Produces(MediaType.TEXT_PLAIN)
> @Path("/doesNotWork")
> public void doesNotWork(@Suspended AsyncResponse response) {
> executorService.submit(() -> {
> LOGGER.debug("Async task...");
> response.resume("Success!");
> });
> }
> First call to method above works as it should but subsequent calls just hangs
> up forever. No thread deadlocks were detected.
> The example test (Maven project) is attached to this item.
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