[YARN-7339] LocalityMulticastAMRMProxyPolicy should handle cancel request properly

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.9.0, 3.0.0
• Fix Version/s: 2.9.0, 3.0.0
• Hadoop Flags: Reviewed
• Assignee: Botong Huang
• Reporter: Botong Huang
• Created: 16/Oct/17 23:09
• Updated: 31/Oct/17 20:02
• Resolved: 25/Oct/17 21:06

Description

Currently inside AMRMProxy, LocalityMulticastAMRMProxyPolicy is not handling and splitting cancel requests from AM properly:

1. For node cancel request, we should not treat it as a localized resource request. Otherwise it can lead to all weight zero issue when computing localized resource weight.

1. For ANY cancel, we should broadcast to all known subclusters, not just the ones associated with localized resources.