Hi I don't have the jira permission but If you grant me the permission I could contribute to fix the following issue: When using java 11, "metrics.reporters" configuration has to be provided for reporters to be taken into account.
The desired behavior: The MetricRegistryConfiguration looks for a conf like "metrics.reporters = foo,bar", if not found: all reporters that could be found in the configuration will be started. In the code is it done by Set<String> includedReporters = reporterListPattern.splitAsStream(includedReportersString).collect(Collectors.toSet()); https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/metrics/MetricRegistryConfiguration.java#L134 Definition of splitAsStream: If this pattern does not match any subsequence of the input then the resulting stream has just one element, namely the input sequence in string form. It means reporterListPattern.splitAsStream("") should return "" and so includedReporters should have size 1 with "" as unique element However there is a misbehavior in some version of java 8, it does return empty stream. But working with java 11, the further code does not work: if (includedReporters.isEmpty() || includedReporters.contains(reporterName)) https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/metrics/MetricRegistryConfiguration.java#L145 I would suggest to filter empty string: Set<String> includedReporters = reporterListPattern.splitAsStream(includedReportersString).*filter(s -> !s.isEmpty())*.collect(Collectors.toSet()); Regards Matthieu Bonneviot -- Matthieu Bonneviot Senior Engineer, DataDome M +33 7 68 29 79 34 <+33+7+68+29+79+34> E matthieu.bonnev...@datadome.co <matthieu.bonnev...@datadome.co> W www.datadome.co <http://www.datadome.co?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature> <https://www.facebook.com/datadome/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature> <https://fr.linkedin.com/company/datadome?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature> <https://twitter.com/data_dome?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature> <https://datadome.co/forrester-strong-performer-2018/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature> DataDome ranked 'Strong Performer' in latest Forrester Bot management report <https://datadome.co/forrester-strong-performer-2018/?utm_source=WiseStamp&utm_medium=email&utm_term=&utm_content=&utm_campaign=signature>
