org.apache.pig.impl.util

Interface Spillable

All Known Subinterfaces:

DataBag

All Known Implementing Classes:

AccumulativeBag, AvroBagWrapper, DefaultAbstractBag, DefaultDataBag, DistinctDataBag, InternalCachedBag, InternalDistinctBag, InternalSortedBag, NonSpillableDataBag, POPartialAgg, ReadOnceBag, SelfSpillBag, SingleTupleBag, SortedDataBag, SortedSpillBag

public interface Spillable

Method Summary

Methods

Modifier and Type	Method and Description
long	getMemorySize() Requests that an object return an estimate of its in memory size.
long	spill() Instructs an object to spill whatever it can to disk and release references to any data structures it spills.

Method Detail

spill

long spill()

Instructs an object to spill whatever it can to disk and release references to any data structures it spills.

Returns:

number of objects spilled.

getMemorySize

long getMemorySize()

Requests that an object return an estimate of its in memory size.

Returns:

estimated in memory size.