[jira] [Closed] (BEAM-6022) Metrics of the same name and type are created multiple times

["Lukasz Gajowy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-6022?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Gajowy closed BEAM-6022.
-------------------------------
       Resolution: Not A Bug
    Fix Version/s: Not applicable

> Metrics of the same name and type are created multiple times
> ------------------------------------------------------------
>
>                 Key: BEAM-6022
>                 URL: https://issues.apache.org/jira/browse/BEAM-6022
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-java-core
>            Reporter: Lukasz Gajowy
>            Assignee: Kenneth Knowles
>            Priority: Major
>             Fix For: Not applicable
>
>
> I noticed that when the below (or any other metric type) is called multiple times:
> {code:java}
> Metrics.counter("namespace", "name");{code}
> metrics of the same name and type are created. So when such metrics are queried by name:
> {code:java}
> MetricQueryResults metrics =
>     result
>         .metrics()
>         .queryMetrics(
>             MetricsFilter.builder()
>                 .addNameFilter(MetricNameFilter.named(namespace, name))
>                 .build());
> Iterable<MetricResult<Long>> counters = metrics.getCounters();{code}
> there is ambiguity which MetricResult should be chosen. 
> Should api users obtain one metric result here?
> Should api users  merge the counter results if there are multiple returned?
> I noticed that all of the results contain the same value (not sure if this is always the case). Should api users read only one of the multiple results to get correct metric?



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