Serge Rielau created SPARK-55964:
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Summary: By default, prevent shadowing of system schemas.
Key: SPARK-55964
URL: https://issues.apache.org/jira/browse/SPARK-55964
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 4.2.0
Reporter: Serge Rielau
With the introduction of SYSTEM.BUILTIN and SYSTEM.SESSION to allow
qualification fo routines and relations we are now faced with the dilema that,
there can be persisted schemas with name SESSION and BUILTIN.
For security it is desirable that e.g. builtin.current_user() resolves to
system.builtin.current_user() and not a potentially malicious
main.builtin.current_user().
Here we will, by default ensure the desired order of SYSTEM catalog first,
while providing a config to change it back.
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