Sessions remember directory context, 'tab' completion, kerberos support, initialization scripts and a few new 'hdfs' features you wish you had.
New extensions that help gather runtime statistics from the Namenode, Scheduler, Job History Server and Container Usage.
Added support for "lsp" directory listing "plus" that identifies file information PLUS block information and location. Helpful when determining how well your data is distributed across the cluster and for identifying small file issues.