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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-7583) SQL TX: Change secondary indexes structure
Date Thu, 16 Aug 2018 15:30:01 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-7583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vladimir Ozerov updated IGNITE-7583:
------------------------------------
    Component/s: mvcc

> SQL TX: Change secondary indexes structure
> ------------------------------------------
>
>                 Key: IGNITE-7583
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7583
>             Project: Ignite
>          Issue Type: Task
>          Components: mvcc, sql
>            Reporter: Igor Seliverstov
>            Assignee: Roman Kondakov
>            Priority: Major
>             Fix For: 2.7
>
>
> We need to change:
>  * rows with the same key and different versions should be placed in a tree ordered by
version decending
>  * move next version from BTree leafs to data rows
>  * filters according to next logic: the row is visible if leaf version is less than assigned
and not active and max_version of referenced row is NA or heigher than assigned or active 



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