Github user NicoK commented on a diff in the pull request: https://github.com/apache/flink/pull/4110#discussion_r126443494 --- Diff: flink-metrics/flink-metrics-statsd/src/main/java/org/apache/flink/metrics/statsd/StatsDReporter.java --- @@ -193,7 +198,10 @@ private void send(final String name, final String value) { @Override public String filterCharacters(String input) { char[] chars = null; - final int strLen = input.length(); + if (input.length() > maxComponentLength) { + log.warn("The metric name component {} exceeded the {} characters length limit and was truncated.", input, maxComponentLength); + } + final int strLen = Math.min(input.length(), maxComponentLength); --- End diff -- same here about the `Math.min`
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