remove trap_on_error
clean hive logs
remove unused parameters
improve uxugsync upload
remove uncommon context codes
remove old code
add nn notes
migrate ganglia after latest mecano
migrate hive after latest mecano
migrate hue after latest mecano
migrate oozie after latest mecano
migrate nagios after latest mecano
migrate xasecure after latest mecano
migrate zookeeper after latest mecano
user defined configuration and single node mode
zoo backup example
xa: fix callback after rename
oozie: fix callback after rename
hbase: pretify
hdfs: disable default accesstime.precision in hdp