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https://issues.apache.org/jira/browse/FLINK-9461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16700102#comment-16700102
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Timo Walther commented on FLINK-9461:
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[~yanghua] Yes, this is why we only ported format-related classes so far. There
is a long tail of classes that are pulled in transitively. We can only change
that by modifying the interface for defining rowtime time attributes. I'm
pretty sure that we have to change the interfaces as part of the [connector
improvements|https://docs.google.com/document/d/1Yaxp1UJUFW-peGLt8EIidwKIZEWrrA-pznWLuvaH39Y/edit#heading=h.41fd6rs7b3cf].
You can open a separate issue for this.
> Disentangle flink-connector-kafka from flink-table and flink-json
> -----------------------------------------------------------------
>
> Key: FLINK-9461
> URL: https://issues.apache.org/jira/browse/FLINK-9461
> Project: Flink
> Issue Type: Sub-task
> Components: Build System
> Affects Versions: 1.5.0
> Reporter: Till Rohrmann
> Assignee: vinoyang
> Priority: Major
> Fix For: 1.8.0
>
>
> Currently, the {{flink-connector-kafka}} module has a dependency on
> {{flink-table}} and {{flink-json}}. The reason seems to be that the module
> contains the {{KafkaJsonTableSource}} and {{KafkaJsonTableSink}}. Even though
> the {{flink-table}} and {{flink-json}} dependency are marked as optional, the
> {{flink-connector-kafka}} will still contain the table sources and sinks. I
> think this is not a clean design.
> I would propose to move the table sources and sinks into a dedicated module
> which depends on {{flink-connector-kafka}}. That way we would better separate
> dependencies and could remove {{flink-table}} and {{flink-json}} from
> {{flink-connector-kafka}}.
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