Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/2517#discussion_r80240603
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/metrics/MetricRegistry.java
---
@@ -219,9 +235,19 @@ public ScopeFormats getScopeFormats() {
public void register(Metric metric, String metricName, MetricGroup
group) {
try {
if (reporters != null) {
- for (MetricReporter reporter : reporters) {
- if (reporter != null) {
-
reporter.notifyOfAddedMetric(metric, metricName, group);
+ for (int i= 0; i<reporters.size();i++) {
+ MetricReporter reporter =
reporters.get(i);
+ if (reporter != null){
+
+ FrontMetricGroup front;
+ try {
+ front= groups.get(i);
+ } catch
(IndexOutOfBoundsException e){
+ front=new
FrontMetricGroup(groups.size());
--- End diff --
it would be better to create these groups when the reporter is instantiated.
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