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I often get a deadlock when the IDE is starting up. The "AWT-EventQueue-0" thread is initializing the java editor and makes a call to ProxyLookup.lookup() which calls into the projects subsystem. While holding a lock on org.netbeans.api.projects.ProjectMemberList.LOCK it then kicks off an o.n.loaders.FolderList.getChildren task waits for it. The "Folder recognizer" task calls into the projects subsystem to do a getProjectMember(), which tries to lock the same string. See attached thread dump.
Created attachment 9507 [details] thread dump
Studying attached thread dump, this deadlock seems to be the same as in #30950. *** This issue has been marked as a duplicate of 30950 ***
As described in http://www.netbeans.org/servlets/ReadMsg?msgId=619519&listName=nbdiscuss the current work on projects prototype has been stopped. Marking issue as VERIFIED --->
---> CLOSED