public static class ReservoirSampling.Initial
extends org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>
Constructor and Description |
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Initial() |
Initial(String kStr)
Map-side constructor for reservoir sampling UDF
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Modifier and Type | Method and Description |
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org.apache.pig.data.Tuple |
exec(org.apache.pig.data.Tuple inputTuple) |
allowCompileTimeCalculation, finish, getArgToFuncMapping, getCacheFiles, getInputSchema, getLoadCaster, getLogger, getPigLogger, getReporter, getReturnType, getSchemaName, getSchemaType, getShipFiles, isAsynchronous, needEndOfAllInputProcessing, outputSchema, progress, setEndOfAllInput, setInputSchema, setPigLogger, setReporter, setUDFContextSignature, warn
public Initial()
public Initial(String kStr)
kStr
- String indicating the maximum number of desired entries in the reservoir.public org.apache.pig.data.Tuple exec(org.apache.pig.data.Tuple inputTuple) throws IOException
exec
in class org.apache.pig.EvalFunc<org.apache.pig.data.Tuple>
IOException
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