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https://issues.apache.org/jira/browse/KAFKA-4144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15833131#comment-15833131
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Jeyhun Karimov commented on KAFKA-4144:
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[~elevy] Shouldn't it be per partitioned stream/table? So, we can define
'TimestampExtractor' per application, per stream/table and per partitioned
stream/table ('KGoupedStream', 'KGoupedTable') and the latter would override
the former.
> Allow per stream/table timestamp extractor
> ------------------------------------------
>
> Key: KAFKA-4144
> URL: https://issues.apache.org/jira/browse/KAFKA-4144
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Affects Versions: 0.10.0.1
> Reporter: Elias Levy
> Assignee: Jeyhun Karimov
> Labels: api
>
> At the moment the timestamp extractor is configured via a StreamConfig value
> to KafkaStreams. That means you can only have a single timestamp extractor
> per app, even though you may be joining multiple streams/tables that require
> different timestamp extraction methods.
> You should be able to specify a timestamp extractor via
> KStreamBuilder.stream/table, just like you can specify key and value serdes
> that override the StreamConfig defaults.
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