java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.util.ArrayDeque.iterator(ArrayDeque.java:606)
   at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
   at org.netbeans.modules.masterfs.filebasedfs.naming.NamingFactory.collectSubnames(NamingFactory.java:206)
   at org.netbeans.modules.masterfs.filebasedfs.naming.NamingFactory.findSubTree(NamingFactory.java:191)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.invalidateSubtree(FileObjectFactory.java:458)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:551)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:517)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:517)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refreshImpl(FolderObj.java:517)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.refresh(BaseFileObj.java:860)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.refresh(FolderObj.java:562)
   at org.openide.filesystems.FileObject.refresh(FileObject.java:1219)
   at org.netbeans.modules.masterfs.watcher.Watcher$1.run(Watcher.java:435)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)