ConstantOI doesn't always propagate to UDAF
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Key: HIVE-2592
URL: https://issues.apache.org/jira/browse/HIVE-2592
Project: Hive
Issue Type: Bug
Reporter: Jonathan Chang
Assignee: Jonathan Chang
Depending on the query plan, a UDAF may not actually get a constant OI. E.g.,
set hive.map.aggr=false;
SELECT percentile_approx(cast(substr(src.value,5) AS double), 0.5) FROM src;
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