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Posted to issues@ignite.apache.org by "Yury Gerzhedovich (Jira)" <ji...@apache.org> on 2020/12/01 10:57:00 UTC

[jira] [Updated] (IGNITE-13752) Schema evolution converters.

     [ https://issues.apache.org/jira/browse/IGNITE-13752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yury Gerzhedovich updated IGNITE-13752:
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    Component/s: sql

> Schema evolution converters.
> ----------------------------
>
>                 Key: IGNITE-13752
>                 URL: https://issues.apache.org/jira/browse/IGNITE-13752
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql
>            Reporter: Andrey Mashenkov
>            Priority: Major
>              Labels: iep-54, ignite-3
>
> With "live" schema it should be able to deserialize tuples of old-version to a new classes regarding schema change history.
> Startpoint is to investigate if we could generate converter source->target schema version and them apply changes to data: e.g. column add, default value change.
>  
> Note: column removal should be made manually and class with absent field shouldn't triggers new schema version, but mapped to the latest known schema.
>  
>  



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