brandboat commented on code in PR #20318:
URL: https://github.com/apache/kafka/pull/20318#discussion_r2300625921
##########
raft/src/main/java/org/apache/kafka/raft/LeaderState.java:
##########
@@ -188,6 +189,22 @@ public void resetBeginQuorumEpochTimer(long currentTimeMs)
{
beginQuorumEpochTimer.reset(beginQuorumEpochTimeoutMs);
}
+ public void updateLastReceivedFetchRequest(ReplicaKey replicaKey, long
currentTimeMs) {
+ beginQuorumEpochTimer.update(currentTimeMs);
+ lastFetchRequestMs.put(replicaKey,
beginQuorumEpochTimer.currentTimeMs());
+ }
+
+ public Set<ReplicaKey> needSendBeginQuorumRequestNodes(long currentTimeMs)
{
+ Set<ReplicaKey> replicaKeys = new HashSet<>();
+ beginQuorumEpochTimer.update(currentTimeMs);
+ for (Map.Entry<ReplicaKey, Long> entry :
lastFetchRequestMs.entrySet()) {
+ if (beginQuorumEpochTimer.currentTimeMs() - entry.getValue() >=
beginQuorumEpochTimeoutMs) {
Review Comment:
Just curious—since we already have ReplicaState#hasAcknowledgedLeader, which
indicates whether the follower has acknowledged the current leader, would it
make sense to use this field instead of relying on a timeout here?
##########
raft/src/main/java/org/apache/kafka/raft/ReplicaKey.java:
##########
@@ -52,6 +52,26 @@ public int compareTo(ReplicaKey that) {
}
}
+ /**
+ * Determines whether this {@code ReplicaKey} is considered equivalent to
the given one,
+ * based on the following rules:
+ * <ul>
+ * <li>The {@code id} fields must be equal.</li>
+ * <li>If both instances have a {@code directoryId} present, those must
also be equal.</li>
+ * <li>If either instance does not have a {@code directoryId}, the
comparison
+ * ignores {@code directoryId} and considers them equivalent.</li>
+ * </ul>
+ */
+ public boolean equivalentTo(ReplicaKey that) {
Review Comment:
Why not use `equals`?
##########
raft/src/main/java/org/apache/kafka/raft/ReplicaKey.java:
##########
@@ -52,6 +52,26 @@ public int compareTo(ReplicaKey that) {
}
}
+ /**
+ * Determines whether this {@code ReplicaKey} is considered equivalent to
the given one,
+ * based on the following rules:
+ * <ul>
+ * <li>The {@code id} fields must be equal.</li>
+ * <li>If both instances have a {@code directoryId} present, those must
also be equal.</li>
+ * <li>If either instance does not have a {@code directoryId}, the
comparison
+ * ignores {@code directoryId} and considers them equivalent.</li>
+ * </ul>
+ */
+ public boolean equivalentTo(ReplicaKey that) {
Review Comment:
Why not use `equals`?
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