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https://issues.apache.org/jira/browse/FLINK-11424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16750893#comment-16750893
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lining commented on FLINK-11424:
--------------------------------
why delete the key？
> org.apache.flink.metrics.datadog.DatadogHttpReporter#report remove will throw
> exception
> ---------------------------------------------------------------------------------------
>
> Key: FLINK-11424
> URL: https://issues.apache.org/jira/browse/FLINK-11424
> Project: Flink
> Issue Type: Bug
> Components: Metrics
> Reporter: lining
> Assignee: lining
> Priority: Major
>
> {code:java}
> for (Map.Entry<Gauge, DGauge> entry : gauges.entrySet()) {
> DGauge g = entry.getValue();
> try {
> // Will throw exception if the Gauge is not of Number type
> // Flink uses Gauge to store many types other than Number
> g.getMetricValue();
> request.addGauge(g);
> } catch (Exception e) {
> // Remove that Gauge if it's not of Number type
> gauges.remove(entry.getKey());
> }
> }
> {code}
> in this method remove will java.util.ConcurrentModificationException
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