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

Class GenericUDAFCovarianceSample.GenericUDAFCovarianceSampleEvaluator

java.lang.Object

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

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

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

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

GenericUDAFCovarianceSample

public static class GenericUDAFCovarianceSample.GenericUDAFCovarianceSampleEvaluator
extends GenericUDAFCovariance.GenericUDAFCovarianceEvaluator

Compute the sample covariance by extending GenericUDAFCovarianceEvaluator and overriding the terminate() method of the evaluator.

Nested Class Summary

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.GenericUDAFEvaluator

partitionEvaluator

Constructor Summary

Constructors

Constructor and Description
GenericUDAFCovarianceSampleEvaluator()

Method Summary

Modifier and Type	Method and Description
Object	terminate(GenericUDAFEvaluator.AggregationBuffer agg) Get final aggregation result.

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

getNewAggregationBuffer, getResult, init, iterate, merge, reset, setResult, 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

GenericUDAFCovarianceSampleEvaluator

public GenericUDAFCovarianceSampleEvaluator()

Method Detail

terminate

public Object terminate(GenericUDAFEvaluator.AggregationBuffer agg)
                 throws HiveException

Description copied from class: GenericUDAFEvaluator

Get final aggregation result.

Overrides:

terminate in class GenericUDAFCovariance.GenericUDAFCovarianceEvaluator

Returns:

final aggregation result.

Throws:

HiveException