Tsz Wo Nicholas Sze created RATIS-352:
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Summary: Persist commit index in Raft log.
Key: RATIS-352
URL: https://issues.apache.org/jira/browse/RATIS-352
Project: Ratis
Issue Type: Improvement
Components: server
Reporter: Tsz Wo Nicholas Sze
Assignee: Tsz Wo Nicholas Sze
Current the commit index is not persisted in the Raft log. When a server
restarts, it cannot apply its log until it has joined a Raft group. There is
no problem if there is a Raft group.
However, a server cannot recover its data when formatting a Raft group is
impossible (e.g. a majority of servers are dead). Ideally, a server can safely
apply the log up to the commit index. The JIRA is to persist the commit index
so that such recovery is possible.
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