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

For more details, see https://builds.apache.org/job/hadoop-qbt-branch2-java7-linux-x86/539/ No changes -1 overall The following subsystems voted -1: docker Powered by Apache Yetus 0.8.0 http://yetus.apache.org - To

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

For more details, see https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/1353/ [Dec 16, 2019 2:04:20 AM] (aajisaka) HADOOP-16764. Rewrite Python example codes using Python3 (#1762) [Dec 16, 2019 3:14:28 AM] (ayushsaxena) HADOOP-16755. Fix broken link in single node cluster setup [De