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

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

Constructor Summary

GenericUDAFCovarianceSample.GenericUDAFCovarianceSampleEvaluator()

Method Summary

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, evaluate, isEstimable

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericUDAFCovarianceSample.GenericUDAFCovarianceSampleEvaluator

public GenericUDAFCovarianceSample.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