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

Class GenericUDAFComputeStats.GenericUDAFTimestampStatsEvaluator

java.lang.Object

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

org.apache.hadoop.hive.ql.udf.generic.GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<TimestampWritableV2,TimestampObjectInspector>

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

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

GenericUDAFComputeStats

public static class GenericUDAFComputeStats.GenericUDAFTimestampStatsEvaluator
extends GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<TimestampWritableV2,TimestampObjectInspector>

GenericUDAFTimestampStatsEvaluator High/low value will be saved in stats DB as long value representing seconds since epoch.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	GenericUDAFComputeStats.GenericUDAFTimestampStatsEvaluator.TimestampStatsAgg

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

GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator.NumericStatsAgg

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

GenericUDAFEvaluator.AbstractAggregationBuffer, GenericUDAFEvaluator.AggregationBuffer, GenericUDAFEvaluator.AggregationType, GenericUDAFEvaluator.Mode

Field Summary

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

countNullsField, countNullsFieldOI, funcOI, inputOI, MAX_BIT_VECTORS, maxField, maxFieldOI, minField, minFieldOI, ndvField, ndvFieldOI, numVectorsOI, partialResult, result, soi

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

partitionEvaluator

Constructor Summary

Constructors

Constructor and Description
GenericUDAFTimestampStatsEvaluator()

Method Summary

Modifier and Type	Method and Description
GenericUDAFEvaluator.AggregationBuffer	getNewAggregationBuffer() Get a new aggregation object.
protected TimestampObjectInspector	getValueObjectInspector()
protected TimestampObjectInspector	getValueObjectInspector(PrimitiveTypeInfo typeInfo)
void	reset(GenericUDAFEvaluator.AggregationBuffer agg) Reset the aggregation.

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

init, iterate, merge, terminate, terminatePartial

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericUDAFTimestampStatsEvaluator

public GenericUDAFTimestampStatsEvaluator()

Method Detail

getValueObjectInspector

protected TimestampObjectInspector getValueObjectInspector()

Specified by:

getValueObjectInspector in class GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<TimestampWritableV2,TimestampObjectInspector>

getValueObjectInspector

protected TimestampObjectInspector getValueObjectInspector(PrimitiveTypeInfo typeInfo)

Specified by:

getValueObjectInspector in class GenericUDAFComputeStats.GenericUDAFNumericStatsEvaluator<TimestampWritableV2,TimestampObjectInspector>

getNewAggregationBuffer

public GenericUDAFEvaluator.AggregationBuffer getNewAggregationBuffer()
                                                               throws HiveException

Description copied from class: GenericUDAFEvaluator

Get a new aggregation object.

Specified by:

getNewAggregationBuffer in class GenericUDAFEvaluator

Throws:

HiveException

reset

public void reset(GenericUDAFEvaluator.AggregationBuffer agg)
           throws HiveException

Description copied from class: GenericUDAFEvaluator

Reset the aggregation. This is useful if we want to reuse the same aggregation.

Specified by:

reset in class GenericUDAFEvaluator

Throws:

HiveException