[jira] [Updated] (PHOENIX-6186) Store table metadata last modified timestamp in PTable / System.Catalog

["Geoffrey Jacoby (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-6186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Geoffrey Jacoby updated PHOENIX-6186:
-------------------------------------
    Attachment: PHOENIX-6186-4.x.patch

> Store table metadata last modified timestamp in PTable / System.Catalog
> -----------------------------------------------------------------------
>
>                 Key: PHOENIX-6186
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6186
>             Project: Phoenix
>          Issue Type: New Feature
>            Reporter: Geoffrey Jacoby
>            Assignee: Geoffrey Jacoby
>            Priority: Major
>             Fix For: 4.16.0
>
>         Attachments: PHOENIX-6186-4.x.patch
>
>
> There are many reasons why it's useful to know when a particular table's metadata was last modified. It's helpful when solving cache coherency problems, and also in order to interact with external schema registries which may have multiple versions of a particular schema and require a timestamp to resolve ambiguities. 
> This JIRA will add a last modified timestamp field to System.Catalog, to be updated both when creating a table/view and also when adding or removing a column. Changing purely internal Phoenix properties will not update the timestamp. 



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