Revert ca3381de61ff53604d9389694049a1a4dedc7571 and 20674255ad891bb693ecb2faa5bdb37477073dac as missing JIRA number in commit message
YARN-2940. Fix new findbugs warnings in rest of the hadoop-yarn components. (Contributed by Li Lu)
YARN-2937. Fixed new findbugs warnings in hadoop-yarn-nodemanager. Contributed by Varun Saxena.
YARN-2946. Fixed potential deadlock in RMStateStore. Contributed by Rohith Sharmaks