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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 05:37:23 UTC

[jira] [Resolved] (SPARK-2296) Refactor util.JsonProtocol for evolvability

     [ https://issues.apache.org/jira/browse/SPARK-2296?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-2296.
---------------------------------
    Resolution: Incomplete

> Refactor util.JsonProtocol for evolvability
> -------------------------------------------
>
>                 Key: SPARK-2296
>                 URL: https://issues.apache.org/jira/browse/SPARK-2296
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.0.0
>            Reporter: Andrew Or
>            Priority: Major
>              Labels: bulk-closed
>
> The current design is not very evolvable. For backwards compatibility, every time we add a new field in one of the relevant objects (e.g. StageInfo) we need to add a default value to the field. Otherwise, the test suite still passes, but it throws some sort of obscure json exception if the field does not exist.
> We should let a common interface (JsonSerializable) handle this logic, so we don't need to do it for all classes.



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