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Posted to issues@ignite.apache.org by "Alexey Goncharuk (Jira)" <ji...@apache.org> on 2021/03/24 09:49:00 UTC

[jira] [Updated] (IGNITE-13670) Skip writing null-map and varlen table when possible

     [ https://issues.apache.org/jira/browse/IGNITE-13670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Goncharuk updated IGNITE-13670:
--------------------------------------
    Summary: Skip writing null-map and varlen table when possible  (was: Upgrade nullmap to null-defaults map)

> Skip writing null-map and varlen table when possible
> ----------------------------------------------------
>
>                 Key: IGNITE-13670
>                 URL: https://issues.apache.org/jira/browse/IGNITE-13670
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Alexey Goncharuk
>            Priority: Major
>              Labels: iep-54, ignite-3
>
> The nullmap is currently always written to the tuple layout for all columns (even if there are no nullable columns). This data structure can be further used to encode default values for non-nullable columns (either a user-specified value or 0 for primitives).
> The bits will still be left unused for non-null non-primitive types (UUID, String, byte[], etc).
> Also, need to add support for skipping writing nullmaps (use the flags bit).



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