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Bug 200947

Summary:	startup failure - file access not allowed
Product:	projects	Reporter:	toben
Component:	Maven	Assignee:	Jesse Glick <jglick>
Status:	RESOLVED FIXED
Severity:	normal	Keywords:	RANDOM, THREAD
Priority:	P3
Version:	7.0.1
Hardware:	PC
OS:	Windows XP
Issue Type:	DEFECT	Exception Reporter:
Attachments:	error dialog

Description toben 2011-08-15 06:44:53 UTC

Nearly every time I start netbeans the following dialog is showing. This is a part of my log-file. How should I provide additional informations?

SEVERE [org.openide.util.Exceptions]

msg
msg
Caused: org.netbeans.modules.masterfs.filebasedfs.utils.FSException: Cannot get shared access to MasterFileObject[D:\work\alkis\nasgui\nas.filetypes\nb-configuration.xml@135a4a0:13316bf,valid=true] (probably opened for writing).
	at org.netbeans.modules.masterfs.filebasedfs.utils.FSException.io(FSException.java:118)
	at org.netbeans.modules.masterfs.filebasedfs.fileobjects.MutualExclusionSupport.addResource(MutualExclusionSupport.java:100)
	at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getInputStream(FileObj.java:166)
Caused: java.io.FileNotFoundException
	at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.getInputStream(FileObj.java:193)
[catch] at org.netbeans.modules.maven.M2AuxilaryConfigImpl.doGetConfigurationFragment(M2AuxilaryConfigImpl.java:170)
	at org.netbeans.modules.maven.M2AuxilaryConfigImpl.getConfigurationFragment(M2AuxilaryConfigImpl.java:133)
	at org.netbeans.modules.maven.MavenProjectPropsImpl.readProperties(MavenProjectPropsImpl.java:215)
	at org.netbeans.modules.maven.MavenProjectPropsImpl.get(MavenProjectPropsImpl.java:103)
	at org.netbeans.modules.maven.MavenProjectPropsImpl.get(MavenProjectPropsImpl.java:89)
	at org.netbeans.modules.maven.classpath.BootClassPathImpl.findActivePlatform(BootClassPathImpl.java:134)
	at org.netbeans.modules.maven.classpath.ClassPathProviderImpl.getJavaPlatform(ClassPathProviderImpl.java:300)
	at org.netbeans.modules.maven.NbMavenProjectImpl.createSystemPropsForPropertyExpressions(NbMavenProjectImpl.java:332)
	at org.netbeans.modules.maven.api.PluginPropertyUtils.createEvaluator(PluginPropertyUtils.java:498)
	at org.netbeans.modules.maven.api.PluginPropertyUtils.getPluginProperty(PluginPropertyUtils.java:103)
	at org.netbeans.modules.maven.NbMavenProjectImpl.getScalaDirectory(NbMavenProjectImpl.java:757)
	at org.netbeans.modules.maven.NbMavenProjectImpl.getSourceRoots(NbMavenProjectImpl.java:687)
	at org.netbeans.modules.maven.classpath.ClassPathProviderImpl.getType(ClassPathProviderImpl.java:206)
	at org.netbeans.modules.maven.classpath.ClassPathProviderImpl.findClassPath(ClassPathProviderImpl.java:144)
	at org.netbeans.modules.csl.core.ProjectClassPathProvider.findClassPath(ProjectClassPathProvider.java:70)
	at org.netbeans.api.java.classpath.ClassPath.getClassPath(ClassPath.java:632)
	at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator$1.run(ErrorAnnotator.java:309)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)
ALL [null]: Cannot get shared access to MasterFileObject[D:\work\alkis\nasgui\nas.filetypes\nb-configuration.xml@135a4a0:13316bf,valid=true] (probably opened for writing).
ALL [null]: org.netbeans.modules.masterfs.filebasedfs.utils.FSException: Cannot get shared access to MasterFileObject[D:\work\alkis\nasgui\nas.filetypes\nb-configuration.xml@135a4a0:13316bf,valid=true] (probably opened for writing).


Thanks

Tobias

Comment 1 toben 2011-08-15 06:45:57 UTC

Created attachment 109972 [details]
error dialog

Comment 2 Jesse Glick 2011-08-15 15:52:49 UTC

No idea how to reproduce this. Seems like something is attempting to write to nb-configuration.xml during startup, but no module ought to be doing so. The contents of this file (together with general information about the project in question) might give a clue, but in general you may need to run the IDE in a debugger and set a breakpoint in M2AuxilaryConfigImpl in putConfigurationFragment (also removeConfigurationFragment). I can attempt to prevent M2ACI from simultaneously reading and writing the same file (only triggers a visible problem for Windows users), but I probably cannot verify any fix.

Comment 3 Jesse Glick 2011-08-15 16:04:37 UTC

Possibly fixed in core-main #b8e967a36f60.

Comment 4 Quality Engineering 2011-08-16 13:54:28 UTC

Integrated into 'main-golden'
Changeset: http://hg.netbeans.org/main-golden/rev/b8e967a36f60
User: Jesse Glick <jglick@netbeans.org>
Log: Possible fix of #200947: guard I/O access to nb-configuration.xml, and use recommended idioms for that.