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https://issues.apache.org/jira/browse/FLINK-12987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nico Kruber closed FLINK-12987.
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Resolution: Fixed
Fix Version/s: 1.10.0
fixed on master via fd9ef60cc8448a5f4d1915973e168aad073d8e8d
> DescriptiveStatisticsHistogram#getCount does not return the number of
> elements seen
> -----------------------------------------------------------------------------------
>
> Key: FLINK-12987
> URL: https://issues.apache.org/jira/browse/FLINK-12987
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Metrics
> Affects Versions: 1.6.4, 1.7.2, 1.8.0, 1.9.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> {{DescriptiveStatisticsHistogram#getCount()}} returns the number of elements
> in the current window and not the number of total elements seen over time. In
> contrast, {{DropwizardHistogramWrapper}} does this correctly.
> We should unify the behaviour and add a unit test for it (there is no generic
> histogram test yet).
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