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https://issues.apache.org/jira/browse/FLINK-9863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leonard Xu resolved FLINK-9863.
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Resolution: Won't Fix
The descriptor API is deprecated and will be refactored soon, it's recommend to
use DDL to register tables which supports computed column to extract timestamp.
> Add a built-in ingestion time TS extractor
> ------------------------------------------
>
> Key: FLINK-9863
> URL: https://issues.apache.org/jira/browse/FLINK-9863
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / API
> Affects Versions: 1.6.0
> Reporter: Timo Walther
> Priority: Major
> Labels: auto-unassigned
>
> There are cases where ingestion time is also useful in the Table & SQL API.
> As an example see FLINK-9857 and the linked mailing list discussion there. We
> should provide an ingestion time timestamps extractor in
> {{org.apache.flink.table.sources.tsextractors}}.
> The following classes should be updated as welll:
> - org.apache.flink.table.descriptors.Rowtime
> - org.apache.flink.table.descriptors.RowtimeValidator
> - org.apache.flink.table.descriptors.SchemaValidator#deriveRowtimeAttributes
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