[FLINK-18762] Make network buffers per incoming/outgoing channel can be configured separately

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Fix Version/s: 1.14.0
• Component/s: Runtime / Network
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Yingjie Cao
• Created: 30/Jul/20 07:17
• Updated: 28/Aug/21 11:21
• Resolved: 08/May/21 07:17

Description

In FLINK-16012, we want to decrease the default number of exclusive buffers at receiver side from 2 to 1 to accelerate checkpoint in cases of backpressure. However, number of buffers per outgoing and incoming channels are configured by a single configuration key. It is better to make network buffers per incoming/outgoing channel can be configured separately which is more flexible. At the same time, we can keep the default behavior compatible.

Issue Links

• links to: GitHub Pull Request #13025