When using AsynchronousResponse the client needs to wait for the specified timeout in case the ExceptionMapper is triggered. This is unexpected behaviour since the exception should be returned immediately. (In fact this is done, but the client keeps waiting for the server to close the connection).
Bill Burke <bill> updated the status of jira RESTEASY-721 to Closed
This has been fixed in 2.3.7.Final
Created attachment 812849 [details] RESTEASY-736.zip project to verify bug is fixed. to see test failure run mvn clean test to verify run mvn clean test -Dresteasy.version=2.3.7.Final-redhat-2