org.apache.pig.data
Class SortedSpillBag

java.lang.Object
  org.apache.pig.data.DefaultAbstractBag
      org.apache.pig.data.SelfSpillBag
          org.apache.pig.data.SortedSpillBag

All Implemented Interfaces:

Serializable, Comparable, Iterable<Tuple>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable, DataBag, Spillable

Direct Known Subclasses:

InternalDistinctBag, InternalSortedBag

@InterfaceAudience.Private
@InterfaceStability.Evolving
public abstract class SortedSpillBag
extends SelfSpillBag

Common functionality for proactively spilling bags that need to keep the data sorted.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.pig.data.SelfSpillBag

SelfSpillBag.MemoryLimits

Nested classes/interfaces inherited from class org.apache.pig.data.DefaultAbstractBag

DefaultAbstractBag.BagDelimiterTuple, DefaultAbstractBag.EndBag, DefaultAbstractBag.StartBag

Field Summary

Fields inherited from class org.apache.pig.data.SelfSpillBag

memLimit

Fields inherited from class org.apache.pig.data.DefaultAbstractBag

endBag, MAX_SPILL_FILES, mContents, mSize, mSpillFiles, startBag

Method Summary

long	proactive_spill(Comparator<Tuple> comp) Sort contents of mContents and write them to disk

Methods inherited from class org.apache.pig.data.DefaultAbstractBag

add, addAll, addAll, addAll, clear, compareTo, equals, getMemorySize, getSpillFile, hashCode, incSpillCount, incSpillCount, markSpillableIfNecessary, markStale, readFields, reportProgress, sampleContents, size, toString, warn, write

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.pig.data.DataBag

isDistinct, isSorted, iterator

Methods inherited from interface org.apache.pig.impl.util.Spillable

spill

Method Detail

proactive_spill

public long proactive_spill(Comparator<Tuple> comp)

Sort contents of mContents and write them to disk

Parameters:

comp - Comparator to sort contents of mContents

Returns:

number of tuples spilled