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https://issues.apache.org/jira/browse/IGNITE-13752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey Mashenkov updated IGNITE-13752:
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Description:
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.
was:
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/remove, default
value change.
> Schema evolution converters.
> ----------------------------
>
> Key: IGNITE-13752
> URL: https://issues.apache.org/jira/browse/IGNITE-13752
> Project: Ignite
> Issue Type: Improvement
> 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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