svn merge -c 1556282 FIXES: YARN-1409. NonAggregatingLogHandler can throw RejectedExecutionException. Contributed by Tsuyoshi OZAWA


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1556284 13f79535-47bb-0310-9956-ffa450edef68