Jan Lukavsky created YARN-4681:
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             Summary: ProcfsBasedProcessTree should not calculate private clean 
pages
                 Key: YARN-4681
                 URL: https://issues.apache.org/jira/browse/YARN-4681
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: nodemanager
    Affects Versions: 2.7.0, 2.6.0
            Reporter: Jan Lukavsky


ProcfsBasedProcessTree in Node manager calculates memory used by a process tree 
by parsing `/etc/<pid>/smaps`, where it calculates `min(Pss, Shared_Dirty) + 
Private_Dirty + Private_Clean`. Because not `mlocked` private clean pages can 
reclaimed by kernel, this should be changed to calculating only `Locked` pages 
instead.



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