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https://issues.apache.org/jira/browse/SPARK-22278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tathagata Das resolved SPARK-22278.
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Resolution: Fixed
Fix Version/s: (was: 2.2.0)
3.0.0
Issue resolved by pull request 19495
[https://github.com/apache/spark/pull/19495]
> Expose current event time watermark and current processing time in GroupState
> -----------------------------------------------------------------------------
>
> Key: SPARK-22278
> URL: https://issues.apache.org/jira/browse/SPARK-22278
> Project: Spark
> Issue Type: Sub-task
> Components: Structured Streaming
> Affects Versions: 2.2.0
> Reporter: Tathagata Das
> Assignee: Tathagata Das
> Fix For: 3.0.0
>
>
> Complex state-updating and/or timeout-handling logic in mapGroupsWithState
> functions may require taking decisions based on the current event-time
> watermark and/or processing-time. Currently, you can use the sql function
> `current_timestamp` to get the current processing time, but it needs to
> passed inserted in every row with a select, and then passed through the
> encoder, which isnt efficient. Furthermore, there is no way to get the
> current watermark.
> This JIRA is to expose them through the GroupState API.
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