I'm working on upgrading from activemq 5.11.0 to 5.13.0. When I make an HTTP GET request against the older version of the service, when the queue doesn't have any pending messages, the request hangs until one is ready. On the newer version it returns a fatal status 500 error and throws an exception:
Server Error Caused by: java.lang.IllegalStateException: !asyncSupported at org.eclipse.jetty.server.Request.startAsync(Request.java:2058) at org.eclipse.jetty.continuation.Servlet3Continuation.suspend(Servlet3Continuation.java:170) at org.apache.activemq.web.MessageServlet.handleContinuation(MessageServlet.java:276) It appears that the newer versions of Jetty don't explicitly enable async. Changing webapps/api/WEB-INF/web.xml to add <async-supported>true</async-supported> appeared to resolve the issue, but I'm wondering why that wasn't defined in the first place? Is there is some other configuration that ought to have been toggled to prevent the error? Jim
