gianm opened a new pull request #8013: GroupBy: Fix improper uses of StorageAdapter#getColumnCapabilities. URL: https://github.com/apache/incubator-druid/pull/8013 1) A usage in "isArrayAggregateApplicable" that would potentially incorrectly use array-based aggregation on a virtual column that shadows a real column. 2) A usage in "process" that would potentially use the more expensive multi-value aggregation path on a singly-valued virtual column. (No correctness issue, but a performance issue.)
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