Github user kl0u commented on a diff in the pull request: https://github.com/apache/flink/pull/4901#discussion_r147655793 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/legacy/metrics/AbstractMetricsHandler.java --- @@ -39,12 +39,15 @@ * <p>If the query parameters do not contain a "get" parameter the list of all metrics is returned. * {@code [ { "id" : "X" } ] } * - * <p>If the query parameters do contain a "get" parameter a comma-separate list of metric names is expected as a value. - * {@code /get?X,Y} + * <p>If the query parameters do contain a "get" parameter, a comma-separated list of metric names is expected as a value. + * {@code /metrics?get=X,Y} * The handler will then return a list containing the values of the requested metrics. * {@code [ { "id" : "X", "value" : "S" }, { "id" : "Y", "value" : "T" } ] } */ public abstract class AbstractMetricsHandler extends AbstractJsonRequestHandler { + --- End diff -- Why not putting all these (`PARAMETER_METRICS`, `PARAMETER_AGGREGATION`, `SUBTASK_METRICS_REST_PATH` even `"/jobs/metrics"`, etc) in a `MetricsURLConstants` class (or sth like this) so that there is a central place for all? This could help maintenance.
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