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https://issues.apache.org/jira/browse/FLINK-3429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328956#comment-17328956
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Flink Jira Bot commented on FLINK-3429:
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This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Add histogram-based timestamp/watermark extractor
> -------------------------------------------------
>
> Key: FLINK-3429
> URL: https://issues.apache.org/jira/browse/FLINK-3429
> Project: Flink
> Issue Type: Improvement
> Components: API / DataStream
> Reporter: Robert Metzger
> Priority: Major
> Labels: stale-major
>
> While FLINK-3428 provides a static low watermark generator, we should also
> provide a watermark extractor which periodically takes samples of the
> event-time distribution in a data stream into a histogram.
> From that histogram, users can specify that watermarks should cover a certain
> percentile of the data.
> For example a user might want watermarks to rise when 90% of the events have
> been seen. With the periodic update of the histogram, the extractor can react
> to network latencies and other issues causing late, out-of-order arrivals.
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