i3wangyi commented on a change in pull request #365: Fix RoutingTableProvider
statePropagationLatency metric reporting bug
URL: https://github.com/apache/helix/pull/365#discussion_r308434250
##########
File path:
helix-core/src/main/java/org/apache/helix/spectator/RoutingTableProvider.java
##########
@@ -558,23 +558,28 @@ protected void refresh(Map<String, Map<String,
Map<String, CurrentState>>> curre
private void resetRoutingTableAndNotify(long startTime, RoutingTable
newRoutingTable) {
_routingTableRef.set(newRoutingTable);
- logger.info("Refresh the RoutingTable for cluster {}, takes {} ms.",
- (_helixManager != null ? _helixManager.getClusterName() : null),
+ String clusterName = _helixManager != null ?
_helixManager.getClusterName() : null;
+ logger.info("Refresh the RoutingTable for cluster {}, takes {} ms.",
clusterName,
(System.currentTimeMillis() - startTime));
- notifyRoutingTableChange();
+
+ notifyRoutingTableChange(_helixManager != null ?
_helixManager.getClusterName() : null);
Review comment:
It's a redundant code. Also, passing null value is risky if it's not handled
properly, how about skipping the notify method when it's null?
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