[YARN-8349] Remove YARN registry entries when a service is killed by the RM

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.2.0, 3.1.1
• Fix Version/s: 3.2.0, 3.1.1
• Component/s: yarn-native-services
• Hadoop Flags: Reviewed
• Assignee: Billie Rinaldi
• Reporter: Shane Kumpf
• Due: 31/May/18
• Created: 23/May/18 19:53
• Updated: 01/Jun/18 23:45
• Resolved: 01/Jun/18 23:02

Description

As the title states, when a service is killed by the RM (for exceeding its lifetime for example), the YARN registry entries should be cleaned up.

Without cleanup, DNS can contain multiple hostnames for a single IP address in the case where IPs are reused. This impacts reverse lookups, which breaks services, such as kerberos, that depend on those lookups.