kgyrtkirk commented on a change in pull request #860: HIVE-22408 The fix for
CALCITE-2991 creates wrong results on edge case
URL: https://github.com/apache/hive/pull/860#discussion_r356664585
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File path: ql/src/test/results/clientpositive/llap/mapjoin_hint.q.out
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@@ -648,7 +651,7 @@ STAGE PLANS:
outputColumnNames: _col0, _col1, _col2, _col3, _col4,
_col5, _col6, _col7, _col8
input vertices:
1 Reducer 3
- Statistics: Num rows: 1 Data size: 816 Basic stats:
COMPLETE Column stats: NONE
+ Statistics: Num rows: 0 Data size: 0 Basic stats: NONE
Column stats: NONE
Review comment:
it's great that now we are able to deduce that there will be 0 rows...
I'm wondering if there will be any sideeffects of this `Basic stats: NONE`.
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