Uses of Class
org.apache.pig.impl.io.PigNullableWritable

Packages that use PigNullableWritable

Package	Description
org.apache.pig.backend.hadoop
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators
org.apache.pig.backend.hadoop.executionengine.tez.runtime
org.apache.pig.data	This package contains implementations of Pig specific data types as well as support functions for reading, writing, and using all Pig data types.
org.apache.pig.impl.io

Uses of PigNullableWritable in org.apache.pig.backend.hadoop

Methods in org.apache.pig.backend.hadoop that return PigNullableWritable

Modifier and Type	Method and Description
static PigNullableWritable	HDataType.getNewWritableComparable(byte keyType)
static PigNullableWritable	HDataType.getWritableComparable(java.lang.String className)
static PigNullableWritable	HDataType.getWritableComparableTypes(byte type)
static PigNullableWritable	HDataType.getWritableComparableTypes(java.lang.Object o, byte keyType)

Methods in org.apache.pig.backend.hadoop with parameters of type PigNullableWritable

Modifier and Type	Method and Description
static byte	HDataType.findTypeFromNullableWritable(PigNullableWritable o)

Uses of PigNullableWritable in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer that return PigNullableWritable

Modifier and Type	Method and Description
PigNullableWritable	PigMapReduce.Reduce.IllustratorContextImpl.getCurrentKey()

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with parameters of type PigNullableWritable

Modifier and Type	Method and Description
protected void	PigGenericMapReduce.Reduce.reduce(PigNullableWritable key, java.lang.Iterable<NullableTuple> tupIter, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function which packages the key and List<Tuple> into key, Bag<Tuple> after converting Hadoop type key into Pig type.
protected void	PigGenericMapReduce.ReduceWithComparator.reduce(PigNullableWritable key, java.lang.Iterable<NullableTuple> tupIter, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function which packages the key and List<Tuple> into key, Bag<Tuple> after converting Hadoop type key into Pig type.
protected void	PigCombiner.Combine.reduce(PigNullableWritable key, java.lang.Iterable<NullableTuple> tupIter, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function which packages the key and List <Tuple> into key, Bag<Tuple> after converting Hadoop type key into Pig type.
protected void	DistinctCombiner.Combine.reduce(PigNullableWritable key, java.lang.Iterable<NullableTuple> tupIter, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function which removes values.
void	PigMapReduce.Reduce.IllustratorContextImpl.write(PigNullableWritable k, org.apache.hadoop.io.Writable t)
void	PigMapBase.IllustratorContext.write(PigNullableWritable key, org.apache.hadoop.io.Writable value)

Method parameters in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with type arguments of type PigNullableWritable

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.Mapper.Context	PigMapBase.getIllustratorContext(org.apache.hadoop.conf.Configuration conf, DataBag input, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> output, org.apache.hadoop.mapreduce.InputSplit split) Get mapper's illustrator context
abstract org.apache.hadoop.mapreduce.Mapper.Context	PigGenericMapBase.getIllustratorContext(org.apache.hadoop.conf.Configuration conf, DataBag input, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> output, org.apache.hadoop.mapreduce.InputSplit split)
org.apache.hadoop.mapreduce.Reducer.Context	PigMapReduce.Reduce.getIllustratorContext(org.apache.hadoop.mapred.jobcontrol.Job job, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> input, POPackage pkg) Get reducer's illustrator context
abstract org.apache.hadoop.mapreduce.Reducer.Context	PigGenericMapReduce.Reduce.getIllustratorContext(org.apache.hadoop.mapred.jobcontrol.Job job, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> input, POPackage pkg) Get reducer's illustrator context

Constructor parameters in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer with type arguments of type PigNullableWritable

Constructor and Description
IllustratorContext(org.apache.hadoop.conf.Configuration conf, DataBag input, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> output, org.apache.hadoop.mapreduce.InputSplit split)
IllustratorContextImpl(org.apache.hadoop.mapred.jobcontrol.Job job, java.util.List<Pair<PigNullableWritable,org.apache.hadoop.io.Writable>> input, POPackage pkg)

Uses of PigNullableWritable in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners

Fields in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners declared as PigNullableWritable

Modifier and Type	Field and Description
protected PigNullableWritable[]	WeightedRangePartitioner.quantiles

Fields in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners with type parameters of type PigNullableWritable

Modifier and Type	Field and Description
protected org.apache.hadoop.io.RawComparator<PigNullableWritable>	WeightedRangePartitioner.comparator
protected java.util.Map<PigNullableWritable,DiscreteProbabilitySampleGenerator>	WeightedRangePartitioner.weightedParts

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners that return PigNullableWritable

Modifier and Type	Method and Description
protected PigNullableWritable	WeightedRangePartitioner.getPigNullableWritable(Tuple t)

Methods in org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.partitioners with parameters of type PigNullableWritable

Modifier and Type	Method and Description
int	WeightedRangePartitioner.getPartition(PigNullableWritable key, org.apache.hadoop.io.Writable value, int numPartitions)
int	SkewedPartitioner.getPartition(PigNullableWritable wrappedKey, org.apache.hadoop.io.Writable value, int numPartitions)
int	SecondaryKeyPartitioner.getPartition(PigNullableWritable key, org.apache.hadoop.io.Writable value, int numPartitions)

Uses of PigNullableWritable in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators

Fields in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators declared as PigNullableWritable

Modifier and Type	Field and Description
protected PigNullableWritable	POPackage.keyWritable

Methods in org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators with parameters of type PigNullableWritable

Modifier and Type	Method and Description
void	POPackage.attachInput(PigNullableWritable k, java.util.Iterator<NullableTuple> inp) Attaches the required inputs
java.lang.Object	Packager.getKey(PigNullableWritable key)
Tuple	Packager.getValueTuple(PigNullableWritable keyWritable, NullableTuple ntup, int index)
Tuple	MultiQueryPackager.getValueTuple(PigNullableWritable keyWritable, NullableTuple ntup, int origIndex)
Tuple	LitePackager.getValueTuple(PigNullableWritable keyWritable, NullableTuple ntup, int index) Makes use of the superclass method, but this requires an additional parameter key passed by ReadOnceBag.
Tuple	CombinerPackager.getValueTuple(PigNullableWritable keyWritable, NullableTuple ntup, int index)

Uses of PigNullableWritable in org.apache.pig.backend.hadoop.executionengine.tez.runtime

Methods in org.apache.pig.backend.hadoop.executionengine.tez.runtime with parameters of type PigNullableWritable

Modifier and Type	Method and Description
int	WeightedRangePartitionerTez.getPartition(PigNullableWritable key, org.apache.hadoop.io.Writable value, int numPartitions)

Uses of PigNullableWritable in org.apache.pig.data

Fields in org.apache.pig.data declared as PigNullableWritable

Modifier and Type	Field and Description
protected PigNullableWritable	ReadOnceBag.keyWritable

Constructors in org.apache.pig.data with parameters of type PigNullableWritable

Constructor and Description
ReadOnceBag(Packager pkgr, java.util.Iterator<NullableTuple> tupIter, PigNullableWritable keyWritable) This constructor creates a bag out of an existing iterator of tuples by taking ownership of the iterator and NOT copying the elements of the iterator.

Uses of PigNullableWritable in org.apache.pig.impl.io

Subclasses of PigNullableWritable in org.apache.pig.impl.io

Modifier and Type	Class and Description
class	NullableBag
class	NullableBigDecimalWritable
class	NullableBigIntegerWritable
class	NullableBooleanWritable
class	NullableBytesWritable
class	NullableDateTimeWritable
class	NullableDoubleWritable
class	NullableFloatWritable
class	NullableIntWritable
class	NullableLongWritable
class	NullablePartitionWritable NullablePartitionWritable is an adaptor class around PigNullableWritable that adds a partition index to the class.
class	NullableText
class	NullableTuple
class	NullableUnknownWritable This class can be used when data type is 'Unknown' and there is a need for PigNullableWritable object.

Methods in org.apache.pig.impl.io that return PigNullableWritable

Modifier and Type	Method and Description
PigNullableWritable	PigNullableWritable.clone()
PigNullableWritable	NullablePartitionWritable.getKey()

Methods in org.apache.pig.impl.io with parameters of type PigNullableWritable

Modifier and Type	Method and Description
void	NullablePartitionWritable.setKey(PigNullableWritable k)

Constructors in org.apache.pig.impl.io with parameters of type PigNullableWritable

Constructor and Description
NullablePartitionWritable(PigNullableWritable k)