kirktrue commented on code in PR #14357:
URL: https://github.com/apache/kafka/pull/14357#discussion_r1333657687
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clients/src/main/java/org/apache/kafka/clients/consumer/internals/MembershipManagerImpl.java:
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@@ -237,4 +253,64 @@ public void
updateAssignment(ConsumerGroupHeartbeatResponseData.Assignment assig
}
maybeTransitionToStable();
}
+
+ /**
+ * Performs the reconciliation between the current topic assignment and
the {@link Assignment} provided in the
+ * heartbeat response. Per the KIP-848 protocol, we perform the following:
+ *
+ * <ol>
+ * <li>Revoke partitions, if any</li>
+ * <li>Heartbeat to acknowledge revoked partitions</li>
+ * <li>Assign partitions, if any</li>
+ * <li>Heartbeat to acknowledge assigned partitions</li>
+ * </ol>
+ *
+ * TODO: What are the the state changes here?
+ * TODO: Is SubscriptionState sufficient to build the next heartbeat
request?
+ * TODO: Where do we need to call
ConsumerRebalanceListener.onPartitionsLost()?
+ */
+ void reconcile() {
+ transitionTo(MemberState.RECONCILING);
+
+ Timer remainingAssignmentTime = time.timer(10000);
+
+ // First, we need to determine if any partitions need to be revoked.
+ {
+ ReconciliationResult result = reconciler.revoke(targetAssignment,
remainingAssignmentTime);
+ remainingAssignmentTime.update();
+
+ if (result == ReconciliationResult.COMPLETED) {
+ // If we've revoked one or more partitions, we need to send an
acknowledgement request ASAP to
+ // let the coordinator know that they've been removed locally.
+ return;
+ } else if (result == ReconciliationResult.EXPIRED) {
+ // TODO: what do we do here?
Review Comment:
Should I remove the `Timer` and expose an `onFenced()` method that the
heartbeat invokes? Then the `onFenced()` implementation would call
`onPartitionsLost()`, right?
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