Package org.apache.drill.exec.physical.impl.join

Interface BatchSizePredictor.Factory

All Known Implementing Classes:

BatchSizePredictorImpl.Factory

Enclosing interface:

BatchSizePredictor

public static interface BatchSizePredictor.Factory

A factory for creating BatchSizePredictors.

Method Summary

Modifier and Type	Method	Description
BatchSizePredictor	create(RecordBatch batch, double fragmentationFactor, double safetyFactor)	Creates a predictor with a batch whose data needs to be used to predict other batch sizes.

Method Details

create

BatchSizePredictor create(RecordBatch batch,
 double fragmentationFactor,
 double safetyFactor)

Creates a predictor with a batch whose data needs to be used to predict other batch sizes.

Parameters:

batch - The batch whose size needs to be predicted.

fragmentationFactor - A constant used to predict value vector doubling.

safetyFactor - A constant used to leave padding for unpredictable incoming batches.