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Bug 191720

Summary:	FS watcher not initialized on Kubuntu 10.10
Product:	platform	Reporter:	Jaroslav Tulach <jtulach>
Component:	Filesystems	Assignee:	Jaroslav Tulach <jtulach>
Status:	RESOLVED WONTFIX
Severity:	normal	CC:	anebuzelsky, mmirilovic, saubrecht
Priority:	P2
Version:	7.0
Hardware:	Other
OS:	Linux
Issue Type:	DEFECT	Exception Reporter:

Description Jaroslav Tulach 2010-11-08 08:33:35 UTC

The masterfs needs to be ready to work before ModuleInstall of any module is called. According to last week's explanation by Petr Nejedlý, the following bug is caused by masterfs trying to access the disk sooner than libs.jna module install is called. 

You can either delay the initialization or change the libs.jna module to initialize as soon as its clases are first used.


java.lang.UnsatisfiedLinkError: com.sun.jna.Native.pointerSize()I
com.sun.jna.Native.pointerSize(Native Method)
com.sun.jna.Native.<clinit>(Native.java:88)
org.netbeans.modules.masterfs.watcher.LinuxNotifier.<init>(LinuxNotifier.java:97)
 [catch] at org.netbeans.modules.masterfs.watcher.Watcher.getNotifierForPlatform(Watcher.java:230)
org.netbeans.modules.masterfs.watcher.Watcher.<init>(Watcher.java:82)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:532)
java.lang.Class.newInstance0(Class.java:372)
java.lang.Class.newInstance(Class.java:325)
org.openide.util.lookup.implspi.SharedClassObjectBridge.newInstance(SharedClassObjectBridge.java:64)
org.openide.util.lookup.MetaInfServicesLookup$P.getInstance(MetaInfServicesLookup.java:488)
org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:1005)
org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:551)
org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:491)
org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem$StatusImpl.resultChanged(FileBasedFileSystem.java:253)
org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem$StatusImpl.<init>(FileBasedFileSystem.java:238)
org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.<init>(FileBasedFileSystem.java:77)
org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.<clinit>(FileBasedFileSystem.java:75)
org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:134)
org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:65)
org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:216)
org.netbeans.core.startup.layers.NbinstURLMapper.decodeURL(NbinstURLMapper.java:113)
org.netbeans.core.startup.layers.NbinstURLMapper.getFileObjects(NbinstURLMapper.java:85)
org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:216)
org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider.addLibraryIntoBuild(J2SELibraryTypeProvider.java:196)
org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider.access$000(J2SELibraryTypeProvider.java:78)
org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider$1.run(J2SELibraryTypeProvider.java:128)
org.openide.util.Mutex.postRequest(Mutex.java:1256)
org.openide.util.Mutex.postWriteRequest(Mutex.java:585)
org.netbeans.modules.java.j2seplatform.libraries.J2SELibraryTypeProvider.libraryCreated(J2SELibraryTypeProvider.java:123)
org.netbeans.modules.project.libraries.LibrariesStorage.loadFromStorage(LibrariesStorage.java:175)
org.netbeans.modules.project.libraries.LibrariesStorage.initStorage(LibrariesStorage.java:221)
org.netbeans.modules.project.libraries.LibrariesStorage.getLibraries(LibrariesStorage.java:324)
org.netbeans.modules.project.libraries.LibrariesModule.initProviders(LibrariesModule.java:66)
org.netbeans.modules.project.libraries.LibrariesModule.restored(LibrariesModule.java:61)
org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:426)
org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:366)
org.netbeans.ModuleManager.enable(ModuleManager.java:1010)
org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:318)
org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:254)
org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:286)
org.netbeans.core.startup.Main.getModuleSystem(Main.java:172)
org.netbeans.core.startup.Main.start(Main.java:308)
org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:114)
java.lang.Thread.run(Thread.java:636)

Comment 1 Petr Nejedly 2010-11-08 15:25:47 UTC

Standa is already working on replacing the JNA initialization with proper library layout (which needs no ModuleInstall).

Comment 2 Tomas Danek 2010-11-10 10:35:24 UTC

making p2, since i don't want it to be beta stopper. According to Petr this should issue not affect ability to do fs refresh. Standa has fix already, it will go to trunk.

Comment 3 Jaroslav Tulach 2010-11-10 17:41:47 UTC

"A major functionality is not going to work in beta for unknown, but not small number of users" is not a beta stopper!? OK.

Comment 4 Petr Nejedly 2010-11-11 15:41:44 UTC

It seems that the problem is related to openjdk (vs. sun jdk) on given machine and is broken for every JNA user, not only filesystems.

Comment 5 Jaroslav Tulach 2010-11-24 13:30:20 UTC

OpenJDK problem. Propriatery Sun's JDK works fine.

Comment 6 Antonin Nebuzelsky 2010-11-24 13:49:52 UTC

Will the exception be shown to the user or is it only logged and we silently fallback to the recursive FS refresh on "focus gained" events?

Comment 7 Jaroslav Tulach 2010-11-24 16:32:59 UTC

Yes, we will fallback to the "refresh on focus" behavior.

However the OpenJDK shall really be fixed. Marian, Tonda says, that QA is the right person to contact someone from OpenJDK. Can you please report a bug for them?


/usr/lib/jvm/java-1.6.0-openjdk/bin/java -version
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.1) (6b20-1.9.1-1ubuntu3)
OpenJDK Server VM (build 17.0-b16, mixed mode)