zentol commented on issue #9517: [FLINK-13779][metrics] PrometheusPushGatewayReporter support push metrics with groupingKey URL: https://github.com/apache/flink/pull/9517#issuecomment-524521859 > Could you explain a bit more what the groupingKey actually accomplishes? Is it just a global tag that is applied to all metrics? To clarify, if this is all the groupingKey is then it shouldn't implemented this way; there's no reason to make this a feature specific this reporter.
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