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https://issues.apache.org/jira/browse/PHOENIX-6186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17235824#comment-17235824
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ASF GitHub Bot commented on PHOENIX-6186:
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gjacoby126 commented on pull request #935:
URL: https://github.com/apache/phoenix/pull/935#issuecomment-730791845
Thanks for the reviews, @ChinmaySKulkarni and @shahrs87 ! Squashed and
merged. I've opened up a PR at #977 for the master branch and will also commit
there if tests are green.
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> 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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