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Posted to users@kafka.apache.org by Pushkar Deole <pd...@gmail.com> on 2020/05/15 09:30:18 UTC

topic input parameter in org.apache.kafka.common.serialization.Serializer interface

Hi All,

I am writing a Json customer serializer for our customer objects, which
need to implement the Kafka Serializer interface.
I am wondering what the input parameter "topic" is in the
Serializer.serialize method.
I don't think it is the topic on which data is to be published. Please
correct me if I am wrong, and provide significance of this parameter.

Thanks.

Re: topic input parameter in org.apache.kafka.common.serialization.Serializer interface

Posted by "Matthias J. Sax" <mj...@apache.org>.

It is the topic the record will be send to.

Most serializers ignore this parameter. If could be used to pick a
different serialization format for different topics.


-Matthias

On 5/15/20 2:30 AM, Pushkar Deole wrote:
> Hi All,
> 
> I am writing a Json customer serializer for our customer objects, which
> need to implement the Kafka Serializer interface.
> I am wondering what the input parameter "topic" is in the
> Serializer.serialize method.
> I don't think it is the topic on which data is to be published. Please
> correct me if I am wrong, and provide significance of this parameter.
> 
> Thanks.
>