Jackie-Jiang commented on a change in pull request #7817:
URL: https://github.com/apache/pinot/pull/7817#discussion_r755459241
##########
File path:
pinot-broker/src/main/java/org/apache/pinot/broker/routing/RoutingManager.java
##########
@@ -110,94 +110,99 @@ public void init(HelixManager helixManager) {
}
@Override
- public synchronized void processClusterChange(HelixConstants.ChangeType
changeType) {
- Preconditions.checkState(changeType ==
HelixConstants.ChangeType.EXTERNAL_VIEW
- || changeType == HelixConstants.ChangeType.INSTANCE_CONFIG, "Illegal
change type: %s", changeType);
- if (changeType == HelixConstants.ChangeType.EXTERNAL_VIEW) {
- processExternalViewChange();
- } else {
+ public synchronized void processClusterChange(ChangeType changeType) {
+ if (changeType == ChangeType.IDEAL_STATE || changeType ==
ChangeType.EXTERNAL_VIEW) {
Review comment:
Segment assignment is for the rebalancing, not for the routing callback
updates. Routing updates are much cheaper. Broker will update the mapping from
servers to segments on both IS and EV changes. IS change is less frequent than
EV change, and we cache the version of them so we won't redo the work if the
change is already processed, so I don't worry too much about the overhead.
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