org.apache.datasketches.hive.hll

Class DataToSketchUDAF.DataToSketchEvaluator

java.lang.Object

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

org.apache.datasketches.hive.hll.DataToSketchUDAF.DataToSketchEvaluator

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

DataToSketchUDAF

public static class DataToSketchUDAF.DataToSketchEvaluator
extends org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AbstractAggregationBuffer, org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer, org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationType, org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.Mode

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	HLL_TYPE_FIELD
protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector	hllTypeInspector_
protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector	inputInspector_
protected org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector	intermediateInspector_
protected static String	LG_K_FIELD
protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector	lgKInspector_
protected static String	SKETCH_FIELD

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

partitionEvaluator

Constructor Summary

Constructors

Constructor and Description
DataToSketchEvaluator()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer	getNewAggregationBuffer()
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector	init(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.Mode mode, org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] parameters)
void	iterate(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer agg, Object[] parameters)
void	merge(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf, Object data)
void	reset(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)
Object	terminate(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)
Object	terminatePartial(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)

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

aggregate, close, configure, createPartitionEvaluator, evaluate, getExprString, getPartitionWindowingEvaluator, getWindowingEvaluator, isEstimable

Methods inherited from class java.lang.Object

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

Field Detail

LG_K_FIELD

protected static final String LG_K_FIELD

See Also:

Constant Field Values

HLL_TYPE_FIELD

protected static final String HLL_TYPE_FIELD

See Also:

Constant Field Values

SKETCH_FIELD

protected static final String SKETCH_FIELD

See Also:

Constant Field Values

inputInspector_

protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector inputInspector_

lgKInspector_

protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector lgKInspector_

hllTypeInspector_

protected org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector hllTypeInspector_

intermediateInspector_

protected org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector intermediateInspector_

Constructor Detail

DataToSketchEvaluator

public DataToSketchEvaluator()

Method Detail

getNewAggregationBuffer

public org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer getNewAggregationBuffer()
                                                                                                     throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

getNewAggregationBuffer in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

init

public org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector init(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.Mode mode,
                                                                          org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector[] parameters)
                                                                   throws org.apache.hadoop.hive.ql.metadata.HiveException

Overrides:

init in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

iterate

public void iterate(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer agg,
                    Object[] parameters)
             throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

iterate in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

terminatePartial

public Object terminatePartial(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)
                        throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

terminatePartial in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

merge

public void merge(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf,
                  Object data)
           throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

merge in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

terminate

public Object terminate(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)
                 throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

terminate in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException

reset

public void reset(org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.AggregationBuffer buf)
           throws org.apache.hadoop.hive.ql.metadata.HiveException

Specified by:

reset in class org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator

Throws:

org.apache.hadoop.hive.ql.metadata.HiveException