org.apache.datasketches.pig.kll

Class GetK

java.lang.Object

org.apache.pig.EvalFunc<Integer>

org.apache.datasketches.pig.kll.GetK

public class GetK
extends org.apache.pig.EvalFunc<Integer>

This UDF is to get the parameter K from a given sketch. This can be useful for debugging a work flow to make sure that resulting sketches have the intended K, and, therefore, the intended accuracy

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.EvalFunc

org.apache.pig.EvalFunc.SchemaType

Field Summary

Fields inherited from class org.apache.pig.EvalFunc

log, pigLogger, reporter, returnType

Constructor Summary

Constructors

Constructor and Description
GetK()

Method Summary

Modifier and Type	Method and Description
Integer	exec(org.apache.pig.data.Tuple input)

Methods inherited from class org.apache.pig.EvalFunc

allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, outputSchema, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn

Methods inherited from class java.lang.Object

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

Constructor Detail

GetK

public GetK()

Method Detail

exec

public Integer exec(org.apache.pig.data.Tuple input)
             throws IOException

Specified by:

exec in class org.apache.pig.EvalFunc<Integer>

Throws:

IOException