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From "Chinmay Kulkarni (Jira)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-6086) Take a snapshot of all SYSTEM tables before attempting to upgrade them
Date Wed, 19 Aug 2020 19:17:00 GMT
Chinmay Kulkarni created PHOENIX-6086:
-----------------------------------------

             Summary: Take a snapshot of all SYSTEM tables before attempting to upgrade them
                 Key: PHOENIX-6086
                 URL: https://issues.apache.org/jira/browse/PHOENIX-6086
             Project: Phoenix
          Issue Type: Improvement
    Affects Versions: 4.15.0, 5.0.0
            Reporter: Chinmay Kulkarni
             Fix For: 5.1.0, 4.16.0


Currently we only take a snapshot of SYSTEM.CATALOG before attempting to upgrade it (see [this|https://github.com/apache/phoenix/blob/1922895dfe5960dc025709b04acfaf974d3959dc/phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java#L3718]).
From 4.15 onwards we also store critical metadata information in other SYSTEM tables like
SYSTEM.CHILD_LINK, so it is beneficial to also snapshot those tables before upgrading them
henceforth.



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