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Bug 474728

Summary: Eclipse crashes with empty window after start
Product: [Eclipse Project] Platform Reporter: Thomas BAI <thomas.baier>
Component: ResourcesAssignee: Platform-Resources-Inbox <platform-resources-inbox>
Status: CLOSED DUPLICATE QA Contact:
Severity: normal    
Priority: P3 CC: Lars.Vogel, loskutov, sptaszkiewicz
Version: 3.7   
Target Milestone: ---   
Hardware: All   
OS: All   
Whiteboard:

Description Thomas BAI CLA 2015-08-11 12:25:58 EDT
Hi Community 
please help with eclipse, i'm lost without you:(

After starting eclipse the eclipse indigo logo appears and afterwards an empty  window. This window can't be closed and looks like eclipse is crashed. 

I'm using eclipse indigo in connection with python dev. 
I restartet the VM and reinstalled eclipse platform, but this didn't help. 

LOG FILE: 

!SESSION 2015-08-11 17:40:30.778 -----------------------------------------------
eclipse.buildId=I20110613-1736
java.version=1.6.0_36
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments:  -os linux -ws gtk -arch x86

!ENTRY org.eclipse.core.resources 2 10035 2015-08-11 17:40:33.381
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.

!ENTRY org.eclipse.osgi 4 0 2015-08-11 17:40:33.390
!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.resources (40).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:463)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
	at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Caused by: org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/CPP/src/samplingbased/fun_stl.py' not found.
	at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
	at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
	at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:518)
	at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:710)
	at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1528)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2251)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
	... 28 more
Root exception:
org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/CPP/src/samplingbased/fun_stl.py' not found.
	at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
	at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
	at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:518)
	at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:710)
	at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1528)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2251)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:463)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
	at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

!ENTRY org.eclipse.osgi 4 0 2015-08-11 17:40:33.409
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:622)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Caused by: org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (40).
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:122)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:463)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:400)
	at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:473)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:429)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:417)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
	... 13 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:268)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	... 22 more
Caused by: org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/CPP/src/samplingbased/fun_stl.py' not found.
	at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
	at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
	at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:518)
	at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:710)
	at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1528)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2503)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2251)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
	... 28 more



before the mistake appears i installed the following libs: 


sudo python setup.py install
sudo apt-get install swig
sudo apt-get install gcc
sudo apt-get install python-dev 
sudo apt-get install python2.7-dev

sudo apt-get autoremove

sudo apt-get install libxml2-dev
sudo apt-get install libxslt1-dev
sudo apt-get install python-libxml2
sudo apt-get install python-libxslt1
sudo apt-get install python-dev
sudo apt-get install python-setuptools
sudo apt-get install libnurbs++
sudo python setup.py install


last was the nurbs 0.3 lib which i downloaded. 

c
Comment 1 Lars Vogel CLA 2015-08-11 12:48:01 EDT
Does that also happen with Eclipse Mars?
Comment 2 Andrey Loskutov CLA 2016-09-15 04:25:40 EDT
I don't know how to reproduce, I've just got similar report for 3.8.2, and the code in 4.6 seem to be very similar.

The problem is that SaveManager.startup doesn't catch ObjectNotFoundException which might come from the AbstractDataTree.handleNotFound on startup if the Eclipse was not properly shut down before and some internal data got corrupted.

The only solution for user right now is to wipe the entire workspace and start everything from scratch.

A better solution would be to make some internal cleanup tasks and wipe the appropriated corrupted data structures without crashing the IDE on startup.

Stack from 3.8 (line numbers don't match 4.6, but related code is almost same).

org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element '/x/y/z.class' not found.
	at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
	at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
	at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
	at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
	at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
	at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:518)
	at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:710)
	at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1528)
	at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2502)
	at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2251)
	at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:439)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:300)
	at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:440)
	at org.eclipse.osgi.internal.loader.BundleLoader.setLazyTrigger(BundleLoader.java:263)
	at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:107)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:469)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:216)
	at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:395)
	at org.eclipse.osgi.internal.loader.SingleSourcePackage.loadClass(SingleSourcePackage.java:35)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:461)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
	at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:125)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)
Comment 3 Szymon Ptaszkiewicz CLA 2016-09-15 11:46:50 EDT
(In reply to Andrey Loskutov from comment #2)
> I don't know how to reproduce, I've just got similar report for 3.8.2, and
> the code in 4.6 seem to be very similar.

Not true, the code is different especially regarding handling potential ObjectNotFoundExceptions. See bug 149121 and bug 437005 which capture 2 different causes and different solutions for ObjectNotFoundExceptions. This bug was opened against 3.7 so it can be affected by either of these bugs or by some third unknown cause. Your case may have a difference cause then this bug even if the exception you see in .log is very similar.

> The only solution for user right now is to wipe the entire workspace and
> start everything from scratch.

Not true, the right workaround is to remove the .snap file and the workspace will/should start normally.
Comment 4 Andrey Loskutov CLA 2016-09-16 05:03:42 EDT
(In reply to Szymon Ptaszkiewicz from comment #3)
> (In reply to Andrey Loskutov from comment #2)
> > I don't know how to reproduce, I've just got similar report for 3.8.2, and
> > the code in 4.6 seem to be very similar.
> 
> Not true, the code is different especially regarding handling potential
> ObjectNotFoundExceptions. See bug 149121 and bug 437005 which capture 2
> different causes and different solutions for ObjectNotFoundExceptions. This
> bug was opened against 3.7 so it can be affected by either of these bugs or
> by some third unknown cause. Your case may have a difference cause then this
> bug even if the exception you see in .log is very similar.

I've simply went over the stack in 4.7 and I didn't saw any obvious guards for ObjectNotFoundExceptions, so my assumption was that the code is still not protected and so similar to 3.8. But thanks for the hints, I will close this bug as a dup of 149121.

> > The only solution for user right now is to wipe the entire workspace and
> > start everything from scratch.
> 
> Not true, the right workaround is to remove the .snap file and the workspace
> will/should start normally.

Thanks, I was not aware about *.snap at all, there is no trace in the official documentation for this topic, so the end user has no clue what to do, which effectively means that the only solution is to wipe the workspace :-(.

*** This bug has been marked as a duplicate of bug 149121 ***