Hi all,

I think the same reasoning applies here as with the regular Kafka consumer
sources.

Those support multiple topics, even topic patterns assuming the same schema.

Some times you have so many topics that you can't create a source for each
or as with the pattern the topics might be changing over time.

Cheers
Gyula

On Wed, Nov 27, 2019, 07:36 Jingsong Li <jingsongl...@gmail.com> wrote:

> Hi leo:
>
> Can you share why KafkaSource supports multiple topics?
> Why can't we use multiple sources and then union them?
>
> Best,
> Jingsong Lee
>
> On Wed, Nov 27, 2019 at 8:19 AM leo <leozhangs...@qq.com> wrote:
>
> > Hi,
> >
> > As Flink does not own the data, so it can not forbid this. It's the
> > responsibility of user to deserialize messages from these topics with
> > custom schema deser.
> >
> >
> > On 11/26/19 10:55 AM, Jun Zhang wrote:
> > >
> > > If the data formats of the Multi-topics are different, what do you
> > > plan to do?
> > >
> > > On 11/26/2019 08:53,leo<leozhangs...@qq.com>
> > > <mailto:leozhangs...@qq.com> wrote:
> > >
> > >
> > >     Hi, all.
> > >
> > >
> > >     I want to propose an improvement of KafkaTableSource which can
> > >     consume
> > >     multiple topics at the same time.
> > >
> > >     Here is proposal,
> > >     https://issues.apache.org/jira/browse/FLINK-14729
> > >
> > >
> > >     Best,
> > >
> > >     Leo
> > >
> > >
> >
>
>
> --
> Best, Jingsong Lee
>

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