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The method uses non scalable methods List.removeAll(Collection). For example changing 30K occurrences to another 30K occurrences consume about 50 seconds.
Should be much faster now: http://hg.netbeans.org/main?cmd=changeset;node=53ec138345bb Please verify.
verified, thank you very much!
Integrated into 'main-golden', will be available in build *200901230201* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main/rev/53ec138345bb User: Jan Lahoda <jlahoda@netbeans.org> Log: #157111: using Set.removeAll instead of List.removeAll.