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From "Ankit Singhal (JIRA)" <>
Subject [jira] [Commented] (PHOENIX-5178) SYSTEM schema is not getting cached at MetaData server
Date Tue, 12 Mar 2019 00:09:00 GMT


Ankit Singhal commented on PHOENIX-5178:

bq. How did this slip by tests? Something to do with how we run ITs?
Actually, the problem is with a special case and was not exposed until the user has a mix
of user permissions on SYSTEM: and doesn't have all the fixes in their build.  Because in
master, an exception handling of AccessDeniedException is covering this bug and not affecting
the user connection as it's timestamp is always greater than the meta timestamp.

I have updated the patch to just test this specific case by impersonating meta connection
because it will be difficult to reproduce and test the upgrade path in master which has so
many exception handling

> SYSTEM schema is not getting cached at MetaData server
> ------------------------------------------------------
>                 Key: PHOENIX-5178
>                 URL:
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 4.8.0
>            Reporter: Ankit Singhal
>            Assignee: Ankit Singhal
>            Priority: Major
>         Attachments: PHOENIX-5178.patch
> During initialization, the meta connection will not be able to see the SYSTEM schema
as the scanner at meta server is running with max_timestamp of MIN_SYSTEM_TABLE_TIMESTAMP(exclusive) which
result in a new connection to create SYSTEM schema metadata everytime.

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