SzyWilliam commented on code in PR #700:
URL: https://github.com/apache/ratis/pull/700#discussion_r936650328
##########
ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java:
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@@ -893,6 +893,14 @@ private CompletableFuture<RaftClientReply>
staleReadAsync(RaftClientRequest requ
return processQueryFuture(stateMachine.queryStale(request.getMessage(),
minIndex), request);
}
+ private CompletableFuture<RaftClientReply> readOnlyAsync(RaftClientRequest
request) {
+ LeaderState leaderState = role.getLeaderStateNonNull();
+ return leaderState.getReadIndex()
Review Comment:
If the server is a follower, it should first send RPC to leader to obtain
leader's `readindex`. Leader should also do the heartbeats to confirm
leadership. After follower get the current `readindex`, it simply waits for
statemachine to advance and query. I plan to implement follower linearizable
read in next PR.
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