Vineet Garg created HIVE-17066:
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Summary: Query78 filter wrong estimatation is generating bad plan
Key: HIVE-17066
URL: https://issues.apache.org/jira/browse/HIVE-17066
Project: Hive
Issue Type: Bug
Reporter: Vineet Garg
Filter operator is estimating 1 row following a left outer join causing bad
estimates
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Reducer 12
Execution mode: vectorized, llap
Reduce Operator Tree:
Map Join Operator
condition map:
Left Outer Join0 to 1
keys:
0 KEY.reducesinkkey0 (type: bigint), KEY.reducesinkkey1
(type: bigint)
1 KEY.reducesinkkey0 (type: bigint), KEY.reducesinkkey1
(type: bigint)
outputColumnNames: _col0, _col1, _col3, _col4, _col5, _col6,
_col8
input vertices:
1 Map 14
Statistics: Num rows: 71676270660 Data size: 3727166074320
Basic stats: COMPLETE Column stats: COMPLETE
Filter Operator
predicate: _col8 is null (type: boolean)
Statistics: Num rows: 1 Data size: 52 Basic stats: COMPLETE
Column stats: COMPLETE
Select Operator
expressions: _col0 (type: bigint), _col1 (type: bigint),
_col3 (type: int), _col4 (type: double), _col5 (type: double), _col6 (type:
bigint)
outputColumnNames: _col0, _col1, _col3, _col4, _col5, _col6
Statistics: Num rows: 1 Data size: 52 Basic stats: COMPLETE
Column stats: COMPLETE
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