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https://issues.apache.org/jira/browse/FLINK-19468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Metzger updated FLINK-19468:
-----------------------------------
Affects Version/s: (was: 2.0.0)
> Metrics return empty when data stream / operator name contains "+"
> ------------------------------------------------------------------
>
> Key: FLINK-19468
> URL: https://issues.apache.org/jira/browse/FLINK-19468
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream, Runtime / Metrics
> Affects Versions: 1.9.0, 1.9.2, 1.9.3
> Reporter: Boyang Jerry Peng
> Assignee: Boyang Jerry Peng
> Priority: Major
> Labels: pull-request-available
> Attachments: StreamingJob.java
>
>
> If I submit a Flink job in which a stream has a name that contains a "+"
> character, the metrics returned for the stream is always empty. For example:
> ```
> env.addSource(new TestSource()).name("testing + plus");
> ```
>
> If I try to get the metrics
> ```
> $ curl
> [http://localhost:8081/jobs/5d4f28a221b2e5762f8404398a462eb0/vertices/cbc357ccb763df2852fee8c4fc7d55f2/metrics?get=0.Source__testing_+_plus.numRecordsOut]
> []
> ```
>
> The http request is also made from the UI if you view the metric
> "[0.Source__testing_+_plus.numRecordsOut|http://localhost:8081/jobs/5d4f28a221b2e5762f8404398a462eb0/vertices/cbc357ccb763df2852fee8c4fc7d55f2/metrics?get=0.Source__testing_+_plus.numRecordsOut]";.
> The metrics will always return empty. However if I remove the "+" from the
> name of the stream. Metrics are returned non-empty.
> Maybe it has something to do with this method:
> [https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/metrics/dump/MetricQueryService.java#L208]
> It does not consider "+" character?
>
> I have attached the full example to reproduce the issue.
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