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Chesnay Schepler commented on FLINK-6053: ----------------------------------------- We can't properly subsume the existing gauge type until the Histogram was reworked. Once that is done, we will deprecate the freestyle gauge type and introduce new String-/NumberGauge types. > Gauge<T> should only take subclasses of Number, rather than everything > ---------------------------------------------------------------------- > > Key: FLINK-6053 > URL: https://issues.apache.org/jira/browse/FLINK-6053 > Project: Flink > Issue Type: Improvement > Components: Metrics > Affects Versions: 1.2.0 > Reporter: Bowen Li > Fix For: 2.0.0 > > > Currently, Flink's Gauge is defined as > ```java > public interface Gauge<T> extends Metric { > T getValue(); > } > ``` > But it doesn't make sense to have Gauge take generic types other than Number. > And it blocks I from finishing FLINK-6013, because I cannot assume Gauge is > only about Number. So the class should be like > ```java > public interface Gauge<T extends Number> extends Metric { > T getValue(); > } > ``` -- This message was sent by Atlassian JIRA (v6.4.14#64029)