[jira] [Created] (FLINK-3998) Access to gauges and counters in StatsDReporter#report() is not properly synchronized

[Shang Yuanchun (Jira)]

Ted Yu created FLINK-3998:
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             Summary: Access to gauges and counters in StatsDReporter#report() is not properly synchronized
                 Key: FLINK-3998
                 URL: https://issues.apache.org/jira/browse/FLINK-3998
             Project: Flink
          Issue Type: Bug
            Reporter: Ted Yu


{code}
    for (Map.Entry<Gauge<?>, String> entry : gauges.entrySet()) {
      reportGauge(entry.getValue(), entry.getKey());
    }

    for (Map.Entry<Counter, String> entry : counters.entrySet()) {
      reportCounter(entry.getValue(), entry.getKey());
{code}
Access to gauges and counters should be protected by lock on AbstractReporter.this



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