Merged revision(s) 1610964 from hadoop/common/trunk:
HADOOP-9921. daemon scripts should remove pid file on stop call after stop or process is found not running ( Contributed by Vinayakumar B)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1610965 13f79535-47bb-0310-9956-ffa450edef68