Todd Lipcon created IMPALA-7409:
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Summary: CatalogObjectVersionSet should not allow duplicate items
Key: IMPALA-7409
URL: https://issues.apache.org/jira/browse/IMPALA-7409
Project: IMPALA
Issue Type: Improvement
Components: Catalog
Affects Versions: Impala 2.12.0
Reporter: Todd Lipcon
Assignee: Todd Lipcon
IMPALA-7386 noted that this data structure was inappropriately using a queue
instead of a set, but its fix preserves the queue-like semantics of allowing
duplicate elements with the same version number. During the code review we
theorized that the storing of duplicate elements may not be necessary, but
didn't want to take the risk of changing semantics in that performance fix.
Here we'll attempt to change it to prohibit duplicates and removal of
non-existent elements.
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