Hanisha Koneru created RATIS-498:
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Summary: Notify Follower to Install Snapshot through state machine
Key: RATIS-498
URL: https://issues.apache.org/jira/browse/RATIS-498
Project: Ratis
Issue Type: New Feature
Components: server
Reporter: Hanisha Koneru
Assignee: Hanisha Koneru
When a lagging Follower wants to catch up with the Leader, and the Leader only
has logs with start index greater than the Followers's last log index, then the
leader sends an InstallSnapshotRequest to the the Follower.
The aim of this Jira is to allow State Machine to decouple snapshot
installation from the Ratis server. When Leader does not have the logs to get
the Follower up to speed, it should notify the Follower to install a snapshot
(if install snapshot through Log Appender is disabled). The Follower in turn
notifies its state machine that a snapshot is required to catch up with the
leader.
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