Rajesh Balamohan created HIVE-15942:
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Summary: Q22 does not get vectorized due to grouping set
evaluations
Key: HIVE-15942
URL: https://issues.apache.org/jira/browse/HIVE-15942
Project: Hive
Issue Type: Bug
Reporter: Rajesh Balamohan
Env: apache hive master with LLAP + tez master
Query: q22 @ tpcds 10 TB scale
Map-1 does not get vectorized. Hive logs point out that group set evaluation is
preventing it from vectorization
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2017-02-16T07:10:06,074 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process
reduceColumnNames [VALUE._col0, VALUE._col1, VALUE._col2]
2017-02-16T07:10:06,074 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process operator GBY
using vectorization contextContext name __Reduce_Shuffle__, level 0, sorted
projectionColumnMap {0=VALUE._col0, 1=VALUE._col1, 2=VALUE._col2},
scratchColumnTypeNames []
2017-02-16T07:10:06,074 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process going to walk
the operator stack to get vectorization context for RS
2017-02-16T07:10:06,075 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: walkStackToFindVectorizationContext GBY has new
vectorization context Context name GBY, level 0, sorted projectionColumnMap
{0=_col0, 1=_col1, 2=_col2}, scratchColumnTypeNames []
2017-02-16T07:10:06,075 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process operator RS
using vectorization contextContext name GBY, level 0, sorted
projectionColumnMap {0=_col0, 1=_col1, 2=_col2}, scratchColumnTypeNames []
2017-02-16T07:10:06,075 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Validating MapWork...
2017-02-16T07:10:06,084 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Cannot vectorize: GROUPBY operator: Grouping sets not
supported
2017-02-16T07:10:06,084 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Validating ReduceWork...
2017-02-16T07:10:06,084 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Cannot vectorize: GROUPBY operator: Pruning grouping set
id not supported
2017-02-16T07:10:06,085 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Validating ReduceWork...
2017-02-16T07:10:06,086 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: Vectorizing ReduceWork...
2017-02-16T07:10:06,086 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: vectorizeReduceWork reducer Operator: SEL...
2017-02-16T07:10:06,086 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process
reduceColumnNames [KEY.reducesinkkey0, KEY.reducesinkkey1, KEY.reducesinkkey2,
KEY.reducesinkkey3, KEY.reducesinkkey4]
2017-02-16T07:10:06,086 INFO [c9d014ef-5a60-4ef1-b7a8-5209da679ebf main]
physical.Vectorizer: ReduceWorkVectorizationNodeProcessor process operator SEL
using vectorization contextContext name __Reduce_Shuffle__, level 0, sorted
projectionColumnMap {0=KEY.reducesinkkey0, 1=KEY.reducesinkkey1,
2=KEY.reducesinkkey2, 3=KEY.reducesinkkey3, 4=KEY.reducesinkkey4},
scratchColumnTypeNames []
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