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Bug 315510

Summary:	Problem starting host.ds example
Product:	[RT] ECF	Reporter:	Wim Jongman <wim.jongman>
Component:	ecf.remoteservices	Assignee:	ecf.core-inbox <ecf.core-inbox>
Status:	CLOSED INVALID	QA Contact:
Severity:	normal
Priority:	P3	CC:	bugs.eclipse.org, slewis
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Wim Jongman

2010-06-02 18:21:09 EDT

Got this error when starting the host.ds example

osgi> !SESSION 2010-06-03 00:20:12.396 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=nl_NL
Framework arguments:  -application org.eclipse.ecf.examples.remoteservices.hello.ds.host.HelloHostDS
Command-line arguments:  -application org.eclipse.ecf.examples.remoteservices.hello.ds.host.HelloHostDS -data C:\Users\jongw\workspaces\nntp/../runtime-HelloServiceDSHost(zeroconf,generic).product -dev file:C:/Users/jongw/workspaces/nntp/.metadata/.plugins/org.eclipse.pde.core/Hello Service DS Host (zeroconf,generic).product/dev.properties -os win32 -ws win32 -arch x86 -consoleLog -console -consoleLog

!ENTRY org.eclipse.osgi 2 0 2010-06-03 00:20:22.501
!MESSAGE While loading class "org.eclipse.ecf.internal.osgi.services.distribution.DiscoveredServiceTrackerImpl$DiscoveredEndpointEvent", thread "Thread[JMDNS Discovery Thread,5,main]" timed out waiting (5000ms) for thread "Thread[Start Level Event Dispatcher,5,main]" to finish starting bundle "org.eclipse.ecf.osgi.services.distribution_1.2.0.qualifier [17]". To avoid deadlock, thread "Thread[JMDNS Discovery Thread,5,main]" is proceeding but "org.eclipse.ecf.internal.osgi.services.distribution.DiscoveredServiceTrackerImpl$DiscoveredEndpointEvent" may not be fully initialized.
!STACK 0
org.osgi.framework.BundleException: State change in progress for bundle "initial@reference:file:../../../workspaces/nntp/org.eclipse.ecf.osgi.services.distribution/" by thread "Start Level Event Dispatcher".
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.eclipse.ecf.internal.osgi.services.distribution.DiscoveredServiceTrackerImpl.serviceChanged(DiscoveredServiceTrackerImpl.java:151)
	at org.eclipse.ecf.internal.osgi.services.discovery.ServicePublicationHandler.notifyDiscoveredServiceTrackers(ServicePublicationHandler.java:103)
	at org.eclipse.ecf.internal.osgi.services.discovery.ServicePublicationHandler.serviceDiscovered(ServicePublicationHandler.java:73)
	at org.eclipse.ecf.discovery.AbstractDiscoveryContainerAdapter.fireServiceDiscovered(AbstractDiscoveryContainerAdapter.java:120)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer.fireDiscovered(JMDNSDiscoveryContainer.java:366)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer$2.run(JMDNSDiscoveryContainer.java:327)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer$1.run(JMDNSDiscoveryContainer.java:125)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
	... 21 more
Root exception:
org.eclipse.osgi.framework.internal.core.AbstractBundle$BundleStatusException
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.beginStateChange(AbstractBundle.java:1077)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:282)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:417)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:265)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:106)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:453)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:393)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:469)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:422)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:410)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.eclipse.ecf.internal.osgi.services.distribution.DiscoveredServiceTrackerImpl.serviceChanged(DiscoveredServiceTrackerImpl.java:151)
	at org.eclipse.ecf.internal.osgi.services.discovery.ServicePublicationHandler.notifyDiscoveredServiceTrackers(ServicePublicationHandler.java:103)
	at org.eclipse.ecf.internal.osgi.services.discovery.ServicePublicationHandler.serviceDiscovered(ServicePublicationHandler.java:73)
	at org.eclipse.ecf.discovery.AbstractDiscoveryContainerAdapter.fireServiceDiscovered(AbstractDiscoveryContainerAdapter.java:120)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer.fireDiscovered(JMDNSDiscoveryContainer.java:366)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer$2.run(JMDNSDiscoveryContainer.java:327)
	at org.eclipse.ecf.provider.jmdns.container.JMDNSDiscoveryContainer$1.run(JMDNSDiscoveryContainer.java:125)
	at java.lang.Thread.run(Unknown Source)

Comment 1 Wim Jongman

2010-06-02 18:23:00 EDT

This patch solved it for me:

### Eclipse Workspace Patch 1.0
#P org.eclipse.ecf.examples.remoteservices.hello.ds.host
Index: products/Hello Service DS Host (zeroconf,generic).product
===================================================================
RCS file: /cvsroot/rt/org.eclipse.ecf/examples/bundles/org.eclipse.ecf.examples.remoteservices.hello.ds.host/products/Hello Service DS Host (zeroconf,generic).product,v
retrieving revision 1.1
diff -u -r1.1 Hello Service DS Host (zeroconf,generic).product
--- products/Hello Service DS Host (zeroconf,generic).product	12 May 2010 04:27:07 -0000	1.1
+++ products/Hello Service DS Host (zeroconf,generic).product	2 Jun 2010 22:22:30 -0000
@@ -49,10 +49,13 @@
    </plugins>
 
    <configurations>
-      <plugin id="org.eclipse.ecf.examples.remoteservices.hello.ds.host" autoStart="true" startLevel="0" />
-      <plugin id="org.eclipse.ecf.osgi.services.distribution" autoStart="true" startLevel="0" />
-      <plugin id="org.eclipse.equinox.common" autoStart="true" startLevel="2" />
+      <plugin id="org.eclipse.ecf.examples.remoteservices.hello.ds.host" autoStart="false" startLevel="0" />
+      <plugin id="org.eclipse.ecf.osgi.services.discovery" autoStart="true" startLevel="0" />
+      <plugin id="org.eclipse.ecf.osgi.services.distribution" autoStart="true" startLevel="3" />
+      <plugin id="org.eclipse.ecf.provider.remoteservice" autoStart="true" startLevel="1" />
+      <plugin id="org.eclipse.equinox.common" autoStart="true" startLevel="1" />
       <plugin id="org.eclipse.equinox.ds" autoStart="true" startLevel="2" />
+      <plugin id="org.eclipse.osgi.services" autoStart="true" startLevel="0" />
    </configurations>
 
 </product>

Comment 2 Scott Lewis

2010-06-02 19:44:18 EDT

Hi Wim.  I've never seen this in my own running of the ds example (host I guess).  Is this easily reproducible?  Any conditions that particularly affect it?

The only reason I ask is that in general...and to the extent possible...I would like to avoid fussing with start levels of the example bundles...since I don't think it will be obvious/clear to people why such start levels are set the way that they are.

Comment 3 Markus Kuppe

2010-06-03 03:36:20 EDT

Maybe for ECF 3.4 we can add a plan item and work on making the bundles/examples start level unaware.

Comment 4 Wim Jongman

2010-06-03 05:21:37 EDT

Hi, I agree. But fiddling with start levels is the biggest time consumer so far in working the ECF 3.3 and Zookeeper. I am sure it must be something in the ZK bundle but it is still pretty annoying. 

Could it be somebody's hardware being fast or slow that causes timing problems? When I start the DS straight out of the CVS repository in my workspace i get: 

"Thread[JMDNS Discovery Thread,5,main]" timed out waiting (5000ms) for thread "Thread[Start Level Event Dispatcher,5,main]" to finish starting bundle "org.eclipse.ecf.osgi.services.distribution_1.2.0.qualifier [17]"

every time.

Comment 5 Scott Lewis

2013-01-29 17:11:27 EST

Is there any more evidence about what's going on with this problem?...or is it still a problem for you Wim?  I am still unable to reproduce.

Comment 6 Wim Jongman

2013-01-30 12:48:37 EST

Haven't seen it for a while.