[MESOS-5740] Consider adding `relink` functionality to libprocess - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 0.28.3, 1.0.0
Component/s: libprocess
Labels:
- libprocess
- mesosphere

Sprint:
Mesosphere Sprint 38
Story Points:
3

Description

Currently we don't have the relink functionality in libprocess. i.e. A way to create a new persistent connection between actors, even if a connection already exists.

This can benefit us in a couple of ways:

The application may have more information on the state of a connection than libprocess does, as libprocess only checks if the connection is alive or not. For example, a linkee may accept a connection, then fork, pass the connection to a child, and subsequently exit. As the connection is still active, libprocess may not detect the exit.
Sometimes, the ExitedEvent might be delayed or might be dropped due to the remote instance being unavailable (e.g., partition, network intermediaries not sending RST's etc).