kaisun2000 commented on a change in pull request #365: Fix RoutingTableProvider
statePropagationLatency metric reporting bug
URL: https://github.com/apache/helix/pull/365#discussion_r308446959
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File path:
helix-core/src/main/java/org/apache/helix/spectator/RoutingTableProvider.java
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@@ -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:
notifyRoutingTableChange() is actually calling the user side registered
callback function. The time spent here should be separately accounted for as
this is out of our control. This can be potentially moved to some other place,
for example in a separate thread specialized for this. That is the reason why I
prefer to keep the interface separate, thus log separate.
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