Ivan Andika created RATIS-1949:
----------------------------------
Summary: Add transfer leadership section in developer's guide
Key: RATIS-1949
URL: https://issues.apache.org/jira/browse/RATIS-1949
Project: Ratis
Issue Type: Sub-task
Components: documentation
Reporter: Ivan Andika
Assignee: Ivan Andika
In Raft Dissertation, the Leader Transfer Extension (Section 3.10) specifies
the transfer leadership process.
Ratis also supports transfer leadership in its work in RATIS-1247. However,
Ratis transfer leadership differs to Raft dissertation transfer leadership in
some aspects, mainly by its used of Raft peer priority for yielding leadership,
to ensure that client availability is maintained.
Currently, there are two mechanisms for Ratis transfer leadership which are
still supported:
# Passive approach (before RATIS-1762): The prior leader passively waits to
transfer leadership to Raft peer with higher priority in the leader's state
periodic check
# Active approach (after RATIS-1762): The prior leader actively monitors the
transferee's match index on every append entries reply, and send
startLeaderElection when the transferee is up-to-date with the leader
This task will document these behaviors.
Topics to be covered (not exhaustive):
# Terminology difference (TimeoutNow is replaced with startLeaderElection)
# Description of passive and active approach
# How developers can implement integrate transfer leadership in their system
## Example use cases (e.g. Ozone and Alluxio)
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
