[jira] [Created] (FLINK-29801) OperatorCoordinator need open the way to operate metricGroup interface

[yuemeng (Jira)]

yuemeng created FLINK-29801:
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             Summary: OperatorCoordinator need open the way to operate 
metricGroup interface
                 Key: FLINK-29801
                 URL: https://issues.apache.org/jira/browse/FLINK-29801
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
            Reporter: yuemeng


Currently, We have no way to get metric group instances in OperatorCoordinator

In some cases, we may report some metric in OperatorCoordinator such as Flink 
hudi integrate scene， some meta will send to operator coordinator to commit to 
hdfs or hms

but we also need to report some metrics in operator coordinator for monitor 
purpose



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