Sergey Shelukhin created HIVE-10349:
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Summary: overflow in stats
Key: HIVE-10349
URL: https://issues.apache.org/jira/browse/HIVE-10349
Project: Hive
Issue Type: Bug
Reporter: Sergey Shelukhin
Assignee: Prasanth Jayachandran
Discovered while running q17 in LLAP.
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Reducer 2
Execution mode: llap
Reduce Operator Tree:
Merge Join Operator
condition map:
Inner Join 0 to 1
keys:
0 _col28 (type: int), _col27 (type: int)
1 cs_bill_customer_sk (type: int), cs_item_sk (type: int)
outputColumnNames: _col1, _col2, _col6, _col8, _col9, _col22,
_col27, _col28, _col34, _col35, _col45, _col51, _col63, _col66, _col82
Statistics: Num rows: 1047651367827495040 Data size:
9223372036854775807 Basic stats: COMPLETE Column stats: PARTIAL
Map Join Operator
condition map:
Inner Join 0 to 1
keys:
0 _col22 (type: int)
1 d_date_sk (type: int)
outputColumnNames: _col1, _col2, _col6, _col8, _col9, _col22,
_col27, _col28, _col34, _col35, _col45, _col51, _col63, _col66, _col82, _col86
input vertices:
1 Map 7
Statistics: Num rows: 1152416529588199552 Data size:
9223372036854775807 Basic stats: COMPLETE Column stats: NONE
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Data size overflows and row count also looks wrong. I wonder if this is why it
generates 1009 reducers for this stage
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