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https://issues.apache.org/jira/browse/FLINK-3836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15260255#comment-15260255
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Greg Hogan commented on FLINK-3836:
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{{Histogram}} is marked as part of the {{@Public}} API which can only be broken
on new major releases. Could something like an equivalent {{LongHistogram}} be
added instead?
> Change Histogram to enable Long counters
> ----------------------------------------
>
> Key: FLINK-3836
> URL: https://issues.apache.org/jira/browse/FLINK-3836
> Project: Flink
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.0.2
> Reporter: Maximilian Bode
> Priority: Minor
>
> Change
> flink/flink-core/src/main/java/org/apache/flink/api/common/accumulators/Histogram.java
> to enable Long counts instead of Integer. In particular, change the TreeMap
> to be <Integer, Long>.
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