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Please see: http://netbeans.org/bugzilla/show_bug.cgi?id=217339#add_comment Seems that CompilationInfos are held though AbstractRefactoring, which is held through Undo support (and possibly other roots). Please make sure refactoring is not retaining CompilationInfos outside parsing tasks. One suspicious place is (refactoring.java's) RenameRefactoringPlugin:106. Thank you very much.
http://hg.netbeans.org/jet-main/rev/bee8cf016cdc I removed RenameRefactoringPlugin:106, it was not used anywhere else. Will analyze the heap dump from #217339 to find the other instances as described by: http://netbeans.org/bugzilla/show_bug.cgi?id=217339#c12
Integrated into 'main-golden', will be available in build *201208290001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-golden/rev/bee8cf016cdc User: Ralph Benjamin Ruijs <ralphbenjamin@netbeans.org> Log: Issue #217501 - (Rename) refactoring keeping CompilationInfos, mostly through Undo queue