org.apache.hadoop.hive.ql.udf.generic
Class GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg

java.lang.Object
  org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AbstractAggregationBuffer
      org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg

All Implemented Interfaces:

GenericUDAFEvaluator.AggregationBuffer

Enclosing class:

GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator

public static class GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg
extends GenericUDAFEvaluator.AbstractAggregationBuffer

Field Summary

String	columnType
long	countFalses
long	countNulls
long	countTrues

Constructor Summary

GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg()

Method Summary

int	estimate() Estimate the size of memory which is occupied by aggregation buffer.

Methods inherited from class java.lang.Object

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

Field Detail

columnType

public String columnType

countTrues

public long countTrues

countFalses

public long countFalses

countNulls

public long countNulls

Constructor Detail

GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg

public GenericUDAFComputeStats.GenericUDAFBooleanStatsEvaluator.BooleanStatsAgg()

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 GenericUDAFEvaluator.AbstractAggregationBuffer