Apache Hadoop qbt Report: branch-2.10+JDK7 on Linux/x86_64

For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-branch-2.10-java7-linux-x86_64/206/ [Feb 10, 2021 11:45:42 PM] (Akira Ajisaka) HADOOP-17516. Upgrade ant to 1.10.9. (#2683) [Feb 11, 2021 10:45:08 PM] (Jim Brennan) YARN-10500. TestDelegationTokenRenewer fails intermittently. (#2

Apache Hadoop qbt Report: trunk+JDK8 on Linux/x86_64

For more details, see https://ci-hadoop.apache.org/job/hadoop-qbt-trunk-java8-linux-x86_64/415/ [Feb 11, 2021 8:14:37 AM] (Szilard Nemeth) YARN-10618. RM UI2 Application page shows the AM preempted containers instead of the nonAM ones. Contributed by Benjamin Teke [Feb 11, 2021 5:37:20 PM] (nor