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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4360) Prevent System.Catalog from splitting
Date Sat, 18 Nov 2017 00:20:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16257796#comment-16257796
] 

Lars Hofhansl commented on PHOENIX-4360:
----------------------------------------

We can have test, but it we'd just test that HBase doesn't split when told not to split. (and
we have tests for that in HBase).

[~apurtell], good point. Could just use {{DisabledRegionSplitPolicy}}

> Prevent System.Catalog from splitting
> -------------------------------------
>
>                 Key: PHOENIX-4360
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4360
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.13.0
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>            Priority: Blocker
>             Fix For: 4.14.0
>
>         Attachments: 4360.txt
>
>
> Just talked to [~jamestaylor].
> It turns out that currently System.Catalog is not prevented from splitting generally,
but does not allow splitting within a schema.
> In the multi-tenant case that is not good enough. When System.Catalog splits and a base
table and view end up in different regions the following can happen:
> * DROP CASCADE no longer works for those views
> * Adding/removing columns to/from the base table no longer works
> Until PHOENIX-3534 is done we should simply prevent System.Catalog from splitting. (just
like HBase:meta)
> [~apurtell]



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