[HADOOP-17165] Implement service-user feature in DecayRPCScheduler

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rpc-server
• Labels: pull-request-available
• Hadoop Flags: Reviewed
• Assignee: Takanobu Asanuma
• Reporter: Takanobu Asanuma
• Created: 30/Jul/20 08:11
• Updated: 11/Feb/24 04:00
• Resolved: 09/Sep/20 16:57

Description

In our cluster, we want to use FairCallQueue to limit heavy users, but not want to restrict certain users who are submitting important requests. This jira proposes to implement the service-user feature that the user is always scheduled high-priority queue.
According to HADOOP-9640, the initial concept of FCQ has this feature, but not implemented finally.

Issue Links

• is related to: HADOOP-15016 RPC FairCallQueue Reservation Support
• is related to: HADOOP-17280 Service-user cost shouldn't be accumulated to totalDecayedCallCost and totalRawCallCost.
• links to: GitHub PR
• links to: GitHub Pull Request #2240