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Posted to issues@ignite.apache.org by "Roman Kondakov (JIRA)" <ji...@apache.org> on 2018/04/25 11:49:00 UTC

[jira] [Resolved] (IGNITE-8207) SQL TX: Cleanup own previous changes on update

     [ https://issues.apache.org/jira/browse/IGNITE-8207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Kondakov resolved IGNITE-8207.
------------------------------------
    Resolution: Won't Fix
      Assignee: Roman Kondakov

If transaction cleanups it's own updates, savepoint feature becomes impossible.

> SQL TX: Cleanup own previous changes on update
> ----------------------------------------------
>
>                 Key: IGNITE-8207
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8207
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Igor Seliverstov
>            Assignee: Roman Kondakov
>            Priority: Major
>
> During update process we're cleaning up rows, which became invisible for all readers.
> Updating a row more than once we are free to cleanup previous own changes except last one. This means we shouldn't leave more than two rows per key with version equal to current tx for updates and one for delete operations.



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