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Created attachment 109335 [details] Thread dump #1 When I delete a project the confirmation dialog comes up, when I say "Yes" it disables all its buttons and stays there forever. To get out I need to kill Netbeans. Thread dump is attached.
Created attachment 109336 [details] THread dump #2
Exactly the same problem was described in bug #189142 (http://netbeans.org/bugzilla/show_bug.cgi?id=189142) but never fixed.
After I killed the NB I found that the would be deleted project folder is still there with most of its contents.
(Congrats on bug #200000 ;-)
I've looked on the attached thread dumps. Thanks for attaching them! The problem is that the project you are deleting is still running. I am able to reproduce the hang in NB 6.9.1 and it works fine in dev builds and NB 7.0 where the project can be deleted. Fixed by af13d26e1fd2 which increased the ant run throughput.
*** This bug has been marked as a duplicate of bug 191847 ***
The project was NOT running. There was another running project but the one that I deleted was not running at the time.
Deleting runs the clean target.
It does not matter which project was running. The ant was running in a single thread executor (already used by running project) project delete tried to do project clean and needed the occupied executor.