[jira] [Created] (FLINK-9210) Call getValue() only once in gauge serialization

[Shang Yuanchun (Jira)]

Jisu You created FLINK-9210:
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             Summary: Call getValue() only once in gauge serialization
                 Key: FLINK-9210
                 URL: https://issues.apache.org/jira/browse/FLINK-9210
             Project: Flink
          Issue Type: Improvement
          Components: Metrics
    Affects Versions: 1.4.2
            Reporter: Jisu You
             Fix For: 1.6.0


MetricDumpSerialization.serializeGauge() calls gauge.getValue twice in gauge serialization. This is troublesome for those who reset gauges in getValue. serializeGauge() should only call getValue once.



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