Michael Smith created IMPALA-13659:
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Summary: Allow union in cached subtree
Key: IMPALA-13659
URL: https://issues.apache.org/jira/browse/IMPALA-13659
Project: IMPALA
Issue Type: Improvement
Reporter: Michael Smith
Allow UNION nodes in a cached subtree. Skip placing a tuple cache node above
unions however, as this will always result in a larger cache entry than the
components of the union. This is primarily useful for aggregation of union
results.
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