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https://issues.apache.org/jira/browse/FLINK-8992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Richter closed FLINK-8992.
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Resolution: Fixed
Merged in:
master: 31c717697a52af2c64439aaaba2f6a1f97a22159
release 1.5: 8118e5c22c4ae406edfbf2f28b101754a47a1742
> Implement source and operator that validate exactly-once
> --------------------------------------------------------
>
> Key: FLINK-8992
> URL: https://issues.apache.org/jira/browse/FLINK-8992
> Project: Flink
> Issue Type: Sub-task
> Components: Tests
> Affects Versions: 1.5.0
> Reporter: Stefan Richter
> Assignee: Stefan Richter
> Priority: Major
>
> We can build this with sources that emit sequences per key and a stateful
> (keyed) operator that validate for the update of each key that the new value
> is the old value + 1. This can help to easily detect if events/state were
> lost or duplicates.
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