Github user zentol commented on a diff in the pull request: https://github.com/apache/flink/pull/2517#discussion_r80241086 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/metrics/groups/AbstractMetricGroup.java --- @@ -168,21 +168,40 @@ public String getMetricIdentifier(String metricName) { * @param filter character filter which is applied to the scope components if not null. * @return fully qualified metric name */ - public String getMetricIdentifier(String metricName, CharacterFilter filter) { - if (scopeString == null) { - if (filter != null) { - scopeString = ScopeFormat.concat(filter, registry.getDelimiter(), scopeComponents); - } else { - scopeString = ScopeFormat.concat(registry.getDelimiter(), scopeComponents); - } + public String getMetricIdentifier(String metricName,CharacterFilter filter) { + if (filter != null){ + scopeString = ScopeFormat.concat(filter, registry.getDelimiter(), scopeComponents); + } else { + scopeString = ScopeFormat.concat(registry.getDelimiter(), scopeComponents); } - - if (filter != null) { + if (filter != null){ return scopeString + registry.getDelimiter() + filter.filterCharacters(metricName); } else { return scopeString + registry.getDelimiter() + metricName; } } + + /** + * Returns the fully qualified metric name for reporter with certain number position in group, for example --- End diff -- the javadoc should say "Returns the fully qualified metric name using the configured delimiter for the reporter with the given index.
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