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From "anugrah (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (KAFKA-5245) KStream builder should capture serdes
Date Tue, 04 Jul 2017 05:52:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-5245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

anugrah reassigned KAFKA-5245:
------------------------------

    Assignee:     (was: anugrah)

> KStream builder should capture serdes 
> --------------------------------------
>
>                 Key: KAFKA-5245
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5245
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 0.10.2.0, 0.10.2.1
>            Reporter: Yeva Byzek
>            Priority: Minor
>              Labels: needs-kip
>
> Even if one specifies a serdes in `builder.stream`, later a call to `groupByKey` may
require the serdes again if it differs from the configured streams app serdes. The preferred
behavior is that if no serdes is provided to `groupByKey`, it should use whatever was provided
in `builder.stream` and not what was in the app.
> From the current docs:
> “When to set explicit serdes: Variants of groupByKey exist to override the configured
default serdes of your application, which you must do if the key and/or value types of the
resulting KGroupedStream do not match the configured default serdes.”



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