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hunshenshi <289517357@qq.com> in hadoop

HDFS-14456:HAState#prepareToEnterState neednt a lock (#770) Contributed by hunshenshi.

YARN-9601.Potential NPE in ZookeeperFederationStateStore#getPoliciesConfigurations (#908) Contributed by hunshenshi.

HDFS-14425. Native build fails on macos due to jlong in hdfs.c (#741)

YARN-9661:Fix typo in LocalityMulticastAMRMProxyPolicy.java and AbstractConfigurableFederationPolicy.java (#1042)