[MAPREDUCE-6269] improve JobConf to add option to not reference same credentials between jobs.

• Type: Improvement
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: client
• Labels: BB2015-05-RFC
• Assignee: Zhihai Xu
• Reporter: Zhihai Xu
• Created: 04/Mar/15 00:48
• Updated: 09/May/15 17:11

Description

Improve JobConf to add constructor to avoid sharing Credentials between jobs.
By default the Credentials will be shared to keep the backward compatibility.
We can add a new constructor with a new parameter to decide whether to share Credentials. Some issues reported in cascading is due to corrupted credentials
at
https://github.com/Cascading/cascading/commit/45b33bb864172486ac43782a4d13329312d01c0e

If we add this support in JobConf, it will benefit all job clients.