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https://issues.apache.org/jira/browse/FLINK-8284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16318999#comment-16318999
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Julio Biason commented on FLINK-8284:
-------------------------------------
I swear to ${deity} that it didn't work. Restarted the project to check logs
and suddenly the metrics are there.
Closing this as invalid. Will reopen if I find any reason for it not working in
the first place.
> Custom metrics not being exposed for Prometheus
> -----------------------------------------------
>
> Key: FLINK-8284
> URL: https://issues.apache.org/jira/browse/FLINK-8284
> Project: Flink
> Issue Type: Bug
> Components: Documentation, Metrics
> Affects Versions: 1.4.0
> Environment: Linux/CentOS 7
> Reporter: Julio Biason
>
> Following the documentation, we changed our filter that removes events with
> missing fields to a RichFilterFunction, so we can capture metrics about such
> events:
> {code:scala}
> public class MissingClientFilter extends RichFilterFunction<LineData> {
> private transient Counter counter;
> @Override
> public void open(Configuration config) {
> this.counter = getRuntimeContext()
> .getMetricGroup()
> .addGroup("events")
> .counter("missingClient");
> }
> @Override
> public boolean filter(LineData line) {
> String client = line.get("client").toString();
> boolean missing = client.trim().equals("");
> if (!missing) {
> this.count();
> }
> return !missing;
> }
> private void count() {
> if (this.counter != null) {
> this.counter.inc();
> }
> }
> }
> {code}
> We also added Prometheus as our reporter:
> {noformat}
> metrics.reporters: prom
> metrics.reporter.prom.port: 9105
> metrics.reporter.prom.class:
> org.apache.flink.metrics.prometheus.PrometheusReporter
> {noformat}
> The problem is accessing port 9105 display all Flink metrics, but not ours.
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