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.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.getWritableComparable(String className)
static PigNullableWritable	HDataType.getWritableComparableTypes(byte type)
static PigNullableWritable	HDataType.getWritableComparableTypes(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 with parameters of type PigNullableWritable

Modifier and Type	Method and Description
protected void	PigGenericMapReduce.Reduce.reduce(PigNullableWritable key, 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, 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, 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, Iterable<NullableTuple> tupIter, org.apache.hadoop.mapreduce.Reducer.Context context) The reduce function which removes values.

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

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

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

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

Modifier and Type	Field and Description
static Map<PigNullableWritable,DiscreteProbabilitySampleGenerator>	WeightedRangePartitioner.weightedParts

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

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, Iterator<NullableTuple> inp) Attaches the required inputs
void	POMultiQueryPackage.attachInput(PigNullableWritable k, Iterator<NullableTuple> inp)

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	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)