mgao0 commented on a change in pull request #1225:
URL: https://github.com/apache/helix/pull/1225#discussion_r466727667
##########
File path:
helix-core/src/main/java/org/apache/helix/controller/stages/CustomizedViewAggregationStage.java
##########
@@ -98,34 +98,34 @@ public void execute(final ClusterEvent event) throws
Exception {
try {
computeCustomizedStateView(resource, stateType,
customizedStateOutput, curCustomizedViews,
updatedCustomizedViews);
-
- List<PropertyKey> keys = new ArrayList<>();
- for (Iterator<CustomizedView> it =
updatedCustomizedViews.iterator(); it.hasNext(); ) {
- CustomizedView view = it.next();
- String resourceName = view.getResourceName();
- keys.add(keyBuilder.customizedView(stateType, resourceName));
- }
- // add/update customized-views from zk and cache
- if (updatedCustomizedViews.size() > 0) {
- dataAccessor.setChildren(keys, updatedCustomizedViews);
- cache.updateCustomizedViews(stateType, updatedCustomizedViews);
- }
-
- // remove stale customized views from zk and cache
- List<String> customizedViewToRemove = new ArrayList<>();
- for (String resourceName : curCustomizedViews.keySet()) {
- if (!resourceMap.keySet().contains(resourceName)) {
- LogUtil.logInfo(LOG, _eventId, "Remove customizedView for
resource: " + resourceName);
- dataAccessor.removeProperty(keyBuilder.customizedView(stateType,
resourceName));
- customizedViewToRemove.add(resourceName);
- }
- }
- cache.removeCustomizedViews(stateType, customizedViewToRemove);
} catch (HelixException ex) {
Review comment:
I'm not sure what HelixException you expect from this method? I think
you could move this try and catch to the end of this method, since I could
imagine some exceptions being thrown when updating to zk?
computeCustomizedStateView is local computation so should be fine.
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