Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/2220#discussion_r70097230
--- Diff:
flink-core/src/main/java/org/apache/flink/metrics/reporter/AbstractReporter.java
---
@@ -84,4 +84,24 @@ public void notifyOfRemovedMetric(Metric metric, String
metricName, AbstractMetr
protected String replaceInvalidChars(String metricName) {
return metricName;
}
+
+ /**
+ * Method which constructs the fully qualified metric name from the
metric group and the metric
+ * name.
+ *
+ * @param metricName Name of the metric
+ * @param group Associated metric group
+ * @return Fully qualified metric name
+ */
+ private String constructMetricName(String metricName,
AbstractMetricGroup group) {
+ StringBuilder builder = new StringBuilder();
+
+ for (String componentName : group.getScopeComponents()) {
+
builder.append(replaceInvalidChars(componentName)).append(".");
--- End diff --
this is a bit inefficient. The output of this loop is identical for all
metrics on that group, yet is computed for every single metric. Instead you
could modify the getScopeString() method to accept a charFilter argument that
is passed into ScopeFormat.concat().
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