[HDFS-9151] Mover should print the exit status/reason on console like balancer tool.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: balancer & mover
• Hadoop Flags: Reviewed
• Assignee: Surendra Singh Lilhore
• Reporter: Archana T
• Created: 28/Sep/15 05:05
• Updated: 30/Aug/16 01:26
• Resolved: 05/Oct/15 07:56

Description

Mover should print exit reason on console –

In cases where there is No blocks to move or unavailable Storages or any other, Mover tool gives No information on exit reason on the console--

# ./hdfs mover
...
Sep 28, 2015 12:31:25 PM Mover took 10sec
# echo $?
0

# ./hdfs mover
...
Sep 28, 2015 12:33:10 PM Mover took 1sec
# echo $?
254

Unlike Balancer prints exit reason
example--
#./hdfs balancer
...
The cluster is balanced. Exiting...
Sep 28, 2015 12:18:02 PM Balancing took 1.744 seconds

Issue Links

• is related to: HDFS-8540 Mover should exit with NO_MOVE_BLOCK if no block can be moved
• is related to: HDFS-8541 Mover should exit with NO_MOVE_PROGRESS if there is no move progress