jackjlli commented on a change in pull request #4323: [Controller Separation]
Add logic for lead controller resource
URL: https://github.com/apache/incubator-pinot/pull/4323#discussion_r306618557
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File path:
pinot-controller/src/main/java/org/apache/pinot/controller/ControllerStarter.java
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@@ -425,6 +416,23 @@ private void initPinotCrypterFactory() {
}
}
+ private void registerListeners(HelixManager helixParticipantManager) {
+ // This registration is not needed when the resource is enabled.
+ // However, the resource can be disabled sometime while the cluster is in
operation, so we keep it here. Plus, it does not add much overhead.
+ // At some point in future when we stop supporting the disabled resource,
we will remove this line altogether and the logic that goes with it.
+ LOGGER.info("Registering helix controller listener");
+ helixParticipantManager.addControllerListener(
+ (ControllerChangeListener) changeContext ->
_leadControllerManager.onHelixControllerChange());
+
+ LOGGER.info("Registering resource config listener");
+ try {
+ helixParticipantManager.addResourceConfigChangeListener(
+ (resourceConfigList, changeContext) ->
_leadControllerManager.onResourceConfigChange());
+ } catch (Exception e) {
+ throw new RuntimeException("Error registering resource config listener",
e);
Review comment:
Done.
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