Apache Hadoop qbt Report: trunk+JDK8 on Linux/x86

For more details, see https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/1326/ [Nov 19, 2019 2:31:17 AM] (abmodi) HADOOP-16657. Move remaining log4j APIs over to slf4j in hadoop-common. [Nov 19, 2019 2:38:40 AM] (abmodi) YARN-9965. Fix NodeManager failing to start on subsequent

Apache Hadoop qbt Report: branch2+JDK7 on Linux/x86

For more details, see https://builds.apache.org/job/hadoop-qbt-branch2-java7-linux-x86/511/ [Nov 19, 2019 4:26:27 AM] (cliang) HDFS-14991. Backport better time precision of [Nov 19, 2019 8:23:01 PM] (weichiu) HDFS-14952. Skip safemode if blockTotal is 0 in new NN. Contributed by -1 overall