Chinmay Kulkarni created PHOENIX-6086:
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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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