Umbrella issue: Resource Control

[nolouch]

Progress

Basic Function development

Expect in 6.6, 7.0.

• RFC: https://github.com/pingcap/tidb/blob/master/docs/design/2022-11-25-global-resource-control.md
• Trace Issue: Global Resource Quota Control  #38825

Optimize customer journeys

Expect in 7.1

• Ease of use enhancement
  • Estimate total RU in a cluster: CALIBRATE RESOURCE resource_control supports calibrate resource  #43212
  • Make EXPLAIN ANALYZE show RU statistics info #41972
  • Metrics Optmize
• Performance Issue
  • Enabling resource control by default results in 6%- 8% performance regression tikv/tikv#14375
• Dmclock Enhancement
  • Resource control is not ideal when the request load from different resource group is unbalanced tikv/pd#6335
• Observability
  • Panel in Dashboard

Manage maintenance tasks

Manage maintenance tasks & bypass TiDB traffic

Tools relative tasks

• BR/Lightning
• CDC/PITR
• Checksum

Background task

• DDL/Analyze

Resource group privilege management

TBD