Hi,

Could you send the manifests of the three bundles, and the manifest of the 
updated core bundle? I'd like to check for class-space issues. 

Regards,

Tim

Date: Fri, 20 Jul 2012 10:20:25 +0200
Subject: ReferenceRecipe waits although service is available again
From: balazs.zsol...@everit.biz
To: user@aries.apache.org

Hi,
I have a problem. Please help me finding out if this is a bug or my use case is 
wrong.
There are three bundles:API bundle: Contains an interface A
Core bundle: Contains the implementation of A and provides it as a 
serviceServlet bundle:Contains Servlet classesContains a ServletActivator class 
that has init, destroy method and A property
A blueprint configuration that sets the A property in the ServletActivator and 
calls the init methodThe init method instantiates the servlet and passes it to 
org.osgi.service.http.HttpService
I start Equinox, everything is fine. I can see the servlet running well. I say 
an update command on the Core bundle and I see that the service is unregistered 
and registered again provided by this bundle. After an http request will stop 
at the line below until a timeout:

"qtp1313052129-27" prio=6 tid=0x000000000873d800 nid=0x2498 in Object.wait() 
[0x000000001105d000]   java.lang.Thread.State: TIMED_WAITING (on object 
monitor)        at java.lang.Object.wait(Native Method)
        at 
org.apache.aries.blueprint.container.ReferenceRecipe.getService(ReferenceRecipe.java:202)
        - locked <0x0000000782888a68> (a java.lang.Object)        at 
org.apache.aries.blueprint.container.ReferenceRecipe.access$000(ReferenceRecipe.java:56)
        at 
org.apache.aries.blueprint.container.ReferenceRecipe$ServiceDispatcher.call(ReferenceRecipe.java:290)
        at 
Proxy18044d63_3609_456d_82b5_803c25785628.getCurrentPresenseForAdspace(Unknown 
Source)
        at 
..................................MyServlet.service(MyServlet.java:76)        
at 
org.eclipse.equinox.http.servlet.internal.ServletRegistration.handleRequest(ServletRegistration.java:90)
        at 
org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:109)
        at 
org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:67)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
        at 
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:598)        
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)   
     at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)       
 at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)   
     at 
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
        at 
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:149)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111) 
       at org.eclipse.jetty.server.Server.handle(Server.java:350)
        at 
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)
        at 
org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)
        at 
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)
        at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:630)
        at 
org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)        at 
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
        at 
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:620)
        at 
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:46)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)

In two of my applications it is always reproducable. Please let me know if you 
see the problem based on the stacktrace by looking at it or if I should provide 
a sample applicaiton. It would be really nice to solve this before 1.0.0 
release comes out as this really stops our TDD development workflow.

There is another problem based on this:
If I update the Servlet bundle just after updating the core bundle everything 
works fine. However if I update the Core bundle, make an http request and than 
try updating the web bundle will be locked until the timeout (basically I 
cannot process any osgi related command in the container as a bundle stopping 
is locked).


Thanks and regards,Balazs Zsoldos

                                          

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