MapReduce on YARN
Recommendation: Make
/apps/history a single encryption zone. History files are moved
between the intermediate and done directories, and
HDFS encryption will not allow you to move encrypted files across encryption
zones.
Steps
On a cluster with MapReduce over YARN installed, create the
/apps/history directory and make it an encryption zone.
If /apps/history already exists and is not empty:
Create an empty
/apps/history-tmpdirectoryMake
/apps/history-tmpan encryption zoneCopy (
distcp) all data from/apps/historyinto/apps/history-tmpRemove
/apps/historyRename
/apps/history-tmpto/apps/history