org.apache.datasketches.pig.sampling

Class VarOptSampling.Final

java.lang.Object

org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

org.apache.datasketches.pig.sampling.VarOptSampling.Final

Enclosing class:

VarOptSampling

public static class VarOptSampling.Final
extends org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

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
Final()
Final(String kStr) Reducer VarOpt sampling constructor.
Final(String kStr, String weightIdxStr) VarOpt sampling constructor.

Method Summary

Modifier and Type	Method and Description
org.apache.pig.data.DataBag	exec(org.apache.pig.data.Tuple inputTuple)

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

Final

public Final()

Final

public Final(String kStr)

Reducer VarOpt sampling constructor.

Parameters:

kStr - String indicating the maximum number of desired samples to return.

Final

public Final(String kStr,
             String weightIdxStr)

VarOpt sampling constructor.

Parameters:

kStr - String indicating the maximum number of desired samples to return.

weightIdxStr - String indicating column index (0-based) of weight values

Method Detail

exec

public org.apache.pig.data.DataBag exec(org.apache.pig.data.Tuple inputTuple)
                                 throws IOException

Specified by:

exec in class org.apache.pig.EvalFunc<org.apache.pig.data.DataBag>

Throws:

IOException