org.apache.hadoop.hive.ql.udf.generic

Class GenericUDAFComputeBitVectorBase.DoubleStatsAgg

java.lang.Object

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AbstractAggregationBuffer

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeBitVectorBase.NumericStatsAgg

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeBitVectorBase.DoubleStatsAgg

All Implemented Interfaces:

GenericUDAFEvaluator.AggregationBuffer

Enclosing class:

GenericUDAFComputeBitVectorBase

public static class GenericUDAFComputeBitVectorBase.DoubleStatsAgg
extends GenericUDAFComputeBitVectorBase.NumericStatsAgg

Field Summary

Fields inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeBitVectorBase.NumericStatsAgg

numDV

Constructor Summary

Constructors

Constructor and Description
DoubleStatsAgg()

Method Summary

Modifier and Type	Method and Description
int	estimate() Estimate the size of memory which is occupied by aggregation buffer.
protected void	update(Object p, PrimitiveObjectInspector inputOI)

Methods inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeBitVectorBase.NumericStatsAgg

reset, serialize, serializePartial

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleStatsAgg

public DoubleStatsAgg()

Method Detail

estimate

public int estimate()

Description copied from class: GenericUDAFEvaluator.AbstractAggregationBuffer

Estimate the size of memory which is occupied by aggregation buffer. Currently, hive assumes that primitives types occupies 16 byte and java object has 64 byte overhead for each. For map, each entry also has 64 byte overhead.

Overrides:

estimate in class GenericUDAFComputeBitVectorBase.NumericStatsAgg

update

protected void update(Object p,
                      PrimitiveObjectInspector inputOI)

Specified by:

update in class GenericUDAFComputeBitVectorBase.NumericStatsAgg