Apache Hadoop qbt Report: branch2.10+JDK7 on Linux/x86

For more details, see https://builds.apache.org/job/hadoop-qbt-branch-2.10-java7-linux-x86/669/ [Apr 27, 2020 9:14:42 PM] (jhung) YARN-8382. cgroup file leak in NM. Contributed by Hu Ziqian. [Apr 28, 2020 12:14:21 AM] (ericp) MAPREDUCE-7277. IndexCache totalMemoryUsed differs from cache content

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

For more details, see https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/1483/ [Apr 27, 2020 6:26:11 AM] (snemeth) YARN-10194. YARN RMWebServices /scheduler-conf/validate leaks ZK [Apr 27, 2020 8:20:47 AM] (github) HDFS-15298 Fix the findbugs warnings introduced in HDFS-15217 (#1979