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From "Chesnay Schepler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-3524) Provide a JSONDeserialisationSchema in the kafka connector package
Date Wed, 16 Mar 2016 16:04:33 GMT

     [ https://issues.apache.org/jira/browse/FLINK-3524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chesnay Schepler updated FLINK-3524:
------------------------------------
    Summary: Provide a JSONDeserialisationSchema in the kafka connector package  (was: Provide
a JSONSerialisationSchema in the kafka connector package)

> Provide a JSONDeserialisationSchema in the kafka connector package
> ------------------------------------------------------------------
>
>                 Key: FLINK-3524
>                 URL: https://issues.apache.org/jira/browse/FLINK-3524
>             Project: Flink
>          Issue Type: Improvement
>          Components: Kafka Connector
>            Reporter: Robert Metzger
>            Assignee: Chesnay Schepler
>              Labels: starter
>
> (I don't want to include this into 1.0.0)
> Currently, there is no standardized way of parsing JSON data from a Kafka stream. I see
a lot of users using JSON in their topics. It would make things easier for our users to provide
a serializer for them.
> I suggest to use the jackson library because we have that aready as a dependency in Flink
and it allows to parse from a byte[].
> I would suggest to provide the following classes:
>  - JSONDeserializationSchema()
>  - JSONDeKeyValueSerializationSchema(bool includeMetadata)
> The second variant should produce a record like this:
> {code}
> {"key": "keydata",
> "value": "valuedata",
> "metadata": {"offset": 123, "topic": "<topic>", "partition": 2 }
> {code}



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