[YARN-3950] Add unique YARN_SHELL_ID environment variable to DistributedShell

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: applications/distributed-shell
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Robert Kanter
• Reporter: Robert Kanter
• Created: 22/Jul/15 01:01
• Updated: 30/Aug/16 01:18
• Resolved: 29/Jul/15 15:19

Description

As discussed in this comment, it would be useful to have a monotonically increasing and independent ID of some kind that is unique per shell in the distributed shell program.

We can do that by adding a SHELL_ID env var.

Issue Links

• is depended upon by: MAPREDUCE-6415 Create a tool to combine aggregated logs into HAR files