Package | Description |
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org.apache.hadoop.hive.ql.optimizer.physical |
Modifier and Type | Class and Description |
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static class |
BucketingSortingOpProcFactory.MultiGroupByInferrer
Processor for GroupByOperator, the special case where it follows a ForwardOperator
There is a multi group by optimization which puts multiple group by operators in a
reducer when they share the same keys and are part of a multi insert query.
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