HDFS-7165. Separate block metrics for files with replication count 1. (Zhe Zhang via wang)
HDFS-7222. Expose DataNode network errors as a metric. (Charles Lamb via wang)
HDFS-7227. Fix findbugs warning about NP_DEREFERENCE_OF_READLINE_VALUE in SpanReceiverHost (cmccabe)
HDFS-7232. Populate hostname in httpfs audit log (Zoran Dimitrijevic via aw)