jiajunwang commented on a change in pull request #490: Add latency metric
components for WAGED rebalancer
URL: https://github.com/apache/helix/pull/490#discussion_r330688071
##########
File path:
helix-core/src/main/java/org/apache/helix/controller/rebalancer/waged/WagedRebalancer.java
##########
@@ -391,7 +429,13 @@ private void validateInput(ResourceControllerDataProvider
clusterData,
Map<String, ResourceAssignment> currentBaseline = Collections.emptyMap();
if (assignmentMetadataStore != null) {
try {
+ _metricCollector.getMetric(
+
WagedRebalancerMetricCollector.WagedRebalancerMetricNames.StateReadLatencyGauge.name(),
+ LatencyMetric.class).startMeasuringLatency();
currentBaseline = assignmentMetadataStore.getBaseline();
+ _metricCollector.getMetric(
+
WagedRebalancerMetricCollector.WagedRebalancerMetricNames.StateReadLatencyGauge.name(),
+ LatencyMetric.class).endMeasuringLatency();
Review comment:
Can we have temp var for the metric object?
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