ahuang98 commented on code in PR #20318:
URL: https://github.com/apache/kafka/pull/20318#discussion_r2449069604
##########
raft/src/main/java/org/apache/kafka/raft/LeaderState.java:
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@@ -188,6 +188,19 @@ public void resetBeginQuorumEpochTimer(long currentTimeMs)
{
beginQuorumEpochTimer.reset(beginQuorumEpochTimeoutMs);
}
+ // Leader don't need to send begin quorum requests to replicas which have
fetched recently.
+ public Set<ReplicaKey> needToSendBeginQuorumRequests(long currentTimeMs) {
+ Set<ReplicaKey> replicaKeys = new HashSet<>();
+ beginQuorumEpochTimer.update(currentTimeMs);
+ for (ReplicaState state : voterStates.values()) {
+ if (currentTimeMs - state.lastFetchTimestamp >=
beginQuorumEpochTimeoutMs
+ || !state.hasAcknowledgedLeader) {
Review Comment:
that's fair, even if `state.lastFetchTimestamp` is negative one the math
will still work out. I can see how having this additional check is more
deliberate/explicit but not actually necessary
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