[YARN-8792] Revisit FairScheduler QueuePlacementPolicy

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.1
• Component/s: fairscheduler
• Assignee: Shuai Zhang
• Reporter: Shuai Zhang
• Created: 19/Sep/18 02:09
• Updated: 26/Feb/20 05:29

Description

Fair scheduler use `QueuePlacementPolicy` to map a request to queue. There are several problems:

1. The termination of the responsibility chain should bind to the assigning result instead of the rule.
2. It should provide a reason when rejecting a request.
3. Still need more useful rules:
   1. RejectNonLeafQueue
   2. RejectDefaultQueue
   3. RejectUsers
   4. RejectQueues
   5. DefaultByUser

Issue Links

• relates to: YARN-2257 Add user to queue mappings to automatically place users' apps into specific queues

Sub-Tasks

• QueuePlacementPolicy bind more information to assigning result: Patch Available
• QueuePlacementPolicy add more rules: Patch Available
• QueuePlacementRule move to separate files: Patch Available
• Add documents for new QueuePlacementRule: Open