[FLINK-8458] Add the switch for keeping both the old mode and the new credit-based mode - ASF JIRA

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Details

Type: Sub-task
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.5.0
Component/s: Runtime / Network
Labels:
None

Description

After the whole feature of credit-based flow control is done, we should add a config parameter to switch on/off the new credit-based mode. To do so, we can roll back to the old network mode for any expected risks.

The parameter is defined as taskmanager.network.credit-based-flow-control.enabled and the default value is true. This switch may be removed after next release.