[FLINK-14815] Expose network metric for sub task in rest api

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Component/s: Runtime / Metrics, Runtime / Network, Runtime / REST
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: lining
• Created: 15/Nov/19 08:56
• Updated: 22/Dec/20 14:37
• Resolved: 22/Dec/20 14:37

Description

• SubTask
  •  pool usage: outPoolUsage, inputExclusiveBuffersUsage, inputFloatingBuffersUsage.
    • If the subtask is not back pressured, but it is causing backpressure (full input, empty output)
    • By comparing exclusive/floating buffers usage, whether all channels are back-pressure or only some of them
  • back-pressured for show whether it is back pressured.

Issue Links

• is blocked by: FLINK-14813 Expose the new mechanism implemented in FLINK-14472 as a "is back-pressured" metric
• is blocked by: FLINK-17328 Expose network metric for job vertex in rest api