[YARN-1974] add args for DistributedShell to specify a set of nodes on which the tasks run

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.7.0
• Component/s: applications/distributed-shell
• Labels: oct16-medium
• Assignee: Hong Zhiguo
• Reporter: Hong Zhiguo
• Created: 23/Apr/14 10:18
• Updated: 27/Oct/16 22:52

Description

It's very useful to execute a script on a specific set of machines for both testing and maintenance purpose.

The args "-nodes" and "-relax_locality" are added to DistributedShell. Together with an unit test using miniCluster.
It's also tested on our real cluster with Fair scheduler.