Uses of Interface
org.apache.hadoop.io.WritableComparable

Packages that use WritableComparable
org.apache.hadoop.io Generic i/o code for use when reading and writing data to the network, to databases, and to files. 
org.apache.hadoop.mapred   
org.apache.hadoop.mapred.join   
org.apache.hadoop.mapred.lib   
org.apache.hadoop.mapred.lib.aggregate   
org.apache.hadoop.mapreduce   
org.apache.hadoop.mapreduce.lib.aggregate   
org.apache.hadoop.mapreduce.lib.join   
org.apache.hadoop.mapreduce.lib.output   
org.apache.hadoop.mapreduce.lib.partition   
org.apache.hadoop.record (DEPRECATED) Hadoop record I/O contains classes and a record description language translator for simplifying serialization and deserialization of records in a language-neutral manner. 
org.apache.hadoop.record.meta   
 

Uses of WritableComparable in org.apache.hadoop.io
 

Classes in org.apache.hadoop.io that implement WritableComparable
 class BooleanWritable
          A WritableComparable for booleans.
 class BytesWritable
          A byte sequence that is usable as a key or value.
 class ByteWritable
          A WritableComparable for a single byte.
 class DoubleWritable
          Writable for Double values.
 class FloatWritable
          A WritableComparable for floats.
 class IntWritable
          A WritableComparable for ints.
 class LongWritable
          A WritableComparable for longs.
 class MD5Hash
          A Writable for MD5 hash values.
 class NullWritable
          Singleton Writable with no data.
 class ShortWritable
          A WritableComparable for shorts.
 class Text
          This class stores text using standard UTF8 encoding.
 class VIntWritable
          A WritableComparable for integer values stored in variable-length format.
 class VLongWritable
          A WritableComparable for longs in a variable-length format.
 

Methods in org.apache.hadoop.io that return WritableComparable
 WritableComparable SortedMapWritable.firstKey()
           
 WritableComparable SortedMapWritable.lastKey()
           
 WritableComparable WritableComparator.newKey()
          Construct a new WritableComparable instance.
 

Methods in org.apache.hadoop.io that return types with arguments of type WritableComparable
 Comparator<? super WritableComparable> SortedMapWritable.comparator()
           
 Set<Map.Entry<WritableComparable,Writable>> SortedMapWritable.entrySet()
           
 Class<? extends WritableComparable> WritableComparator.getKeyClass()
          Returns the WritableComparable implementation class.
 SortedMap<WritableComparable,Writable> SortedMapWritable.headMap(WritableComparable toKey)
           
 Set<WritableComparable> SortedMapWritable.keySet()
           
 SortedMap<WritableComparable,Writable> SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
           
 SortedMap<WritableComparable,Writable> SortedMapWritable.tailMap(WritableComparable fromKey)
           
 

Methods in org.apache.hadoop.io with parameters of type WritableComparable
 int WritableComparator.compare(WritableComparable a, WritableComparable b)
          Compare two WritableComparables.
 int WritableComparator.compare(WritableComparable a, WritableComparable b)
          Compare two WritableComparables.
 SortedMap<WritableComparable,Writable> SortedMapWritable.headMap(WritableComparable toKey)
           
 Writable SortedMapWritable.put(WritableComparable key, Writable value)
           
 SortedMap<WritableComparable,Writable> SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
           
 SortedMap<WritableComparable,Writable> SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
           
 SortedMap<WritableComparable,Writable> SortedMapWritable.tailMap(WritableComparable fromKey)
           
 

Method parameters in org.apache.hadoop.io with type arguments of type WritableComparable
static WritableComparator WritableComparator.get(Class<? extends WritableComparable> c)
          Get a comparator for a WritableComparable implementation.
 void SortedMapWritable.putAll(Map<? extends WritableComparable,? extends Writable> t)
           
 

Constructor parameters in org.apache.hadoop.io with type arguments of type WritableComparable
WritableComparator(Class<? extends WritableComparable> keyClass)
          Construct for a WritableComparable implementation.
WritableComparator(Class<? extends WritableComparable> keyClass, boolean createInstances)
           
 

Uses of WritableComparable in org.apache.hadoop.mapred
 

Methods in org.apache.hadoop.mapred with type parameters of type WritableComparable
static
<K extends WritableComparable,V extends Writable>
Writable
MapFileOutputFormat.getEntry(org.apache.hadoop.io.MapFile.Reader[] readers, Partitioner<K,V> partitioner, K key, V value)
          Get an entry from output generated by this class.
 

Methods in org.apache.hadoop.mapred that return types with arguments of type WritableComparable
 RecordWriter<WritableComparable,Writable> MapFileOutputFormat.getRecordWriter(FileSystem ignored, JobConf job, String name, Progressable progress)
           
static Class<? extends WritableComparable> SequenceFileAsBinaryOutputFormat.getSequenceFileOutputKeyClass(JobConf conf)
          Get the key class for the SequenceFile
 

Uses of WritableComparable in org.apache.hadoop.mapred.join
 

Classes in org.apache.hadoop.mapred.join with type parameters of type WritableComparable
 interface ComposableInputFormat<K extends WritableComparable,V extends Writable>
          Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.
 interface ComposableRecordReader<K extends WritableComparable,V extends Writable>
          Additional operations required of a RecordReader to participate in a join.
 class CompositeInputFormat<K extends WritableComparable>
          An InputFormat capable of performing joins over a set of data sources sorted and partitioned the same way.
 class CompositeRecordReader<K extends WritableComparable,V extends Writable,X extends Writable>
          A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.
 class InnerJoinRecordReader<K extends WritableComparable>
          Full inner join.
 class JoinRecordReader<K extends WritableComparable>
          Base class for Composite joins returning Tuples of arbitrary Writables.
 class MultiFilterRecordReader<K extends WritableComparable,V extends Writable>
          Base class for Composite join returning values derived from multiple sources, but generally not tuples.
 class OuterJoinRecordReader<K extends WritableComparable>
          Full outer join.
 class OverrideRecordReader<K extends WritableComparable,V extends Writable>
          Prefer the "rightmost" data source for this key.
 class WrappedRecordReader<K extends WritableComparable,U extends Writable>
          Proxy class for a RecordReader participating in the join framework.
 

Uses of WritableComparable in org.apache.hadoop.mapred.lib
 

Classes in org.apache.hadoop.mapred.lib with type parameters of type WritableComparable
 class TotalOrderPartitioner<K extends WritableComparable<?>,V>
          Partitioner effecting a total order by reading split points from an externally generated source.
 

Uses of WritableComparable in org.apache.hadoop.mapred.lib.aggregate
 

Classes in org.apache.hadoop.mapred.lib.aggregate with type parameters of type WritableComparable
 class ValueAggregatorCombiner<K1 extends WritableComparable,V1 extends Writable>
          This class implements the generic combiner of Aggregate.
 class ValueAggregatorJobBase<K1 extends WritableComparable,V1 extends Writable>
          This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.
 class ValueAggregatorMapper<K1 extends WritableComparable,V1 extends Writable>
          This class implements the generic mapper of Aggregate.
 class ValueAggregatorReducer<K1 extends WritableComparable,V1 extends Writable>
          This class implements the generic reducer of Aggregate.
 

Uses of WritableComparable in org.apache.hadoop.mapreduce
 

Classes in org.apache.hadoop.mapreduce that implement WritableComparable
 class ID
          A general identifier, which internally stores the id as an integer.
 class JobID
          JobID represents the immutable and unique identifier for the job.
 class TaskAttemptID
          TaskAttemptID represents the immutable and unique identifier for a task attempt.
 class TaskID
          TaskID represents the immutable and unique identifier for a Map or Reduce Task.
 

Uses of WritableComparable in org.apache.hadoop.mapreduce.lib.aggregate
 

Classes in org.apache.hadoop.mapreduce.lib.aggregate with type parameters of type WritableComparable
 class ValueAggregatorCombiner<K1 extends WritableComparable<?>,V1 extends Writable>
          This class implements the generic combiner of Aggregate.
 class ValueAggregatorJobBase<K1 extends WritableComparable<?>,V1 extends Writable>
          This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.
 class ValueAggregatorMapper<K1 extends WritableComparable<?>,V1 extends Writable>
          This class implements the generic mapper of Aggregate.
 class ValueAggregatorReducer<K1 extends WritableComparable<?>,V1 extends Writable>
          This class implements the generic reducer of Aggregate.
 

Uses of WritableComparable in org.apache.hadoop.mapreduce.lib.join
 

Classes in org.apache.hadoop.mapreduce.lib.join with type parameters of type WritableComparable
 class ComposableInputFormat<K extends WritableComparable<?>,V extends Writable>
          Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.
 class ComposableRecordReader<K extends WritableComparable<?>,V extends Writable>
          Additional operations required of a RecordReader to participate in a join.
 class CompositeInputFormat<K extends WritableComparable>
          An InputFormat capable of performing joins over a set of data sources sorted and partitioned the same way.
 class CompositeRecordReader<K extends WritableComparable<?>,V extends Writable,X extends Writable>
          A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.
 class InnerJoinRecordReader<K extends WritableComparable<?>>
          Full inner join.
 class JoinRecordReader<K extends WritableComparable<?>>
          Base class for Composite joins returning Tuples of arbitrary Writables.
 class MultiFilterRecordReader<K extends WritableComparable<?>,V extends Writable>
          Base class for Composite join returning values derived from multiple sources, but generally not tuples.
 class OuterJoinRecordReader<K extends WritableComparable<?>>
          Full outer join.
 class OverrideRecordReader<K extends WritableComparable<?>,V extends Writable>
          Prefer the "rightmost" data source for this key.
 class WrappedRecordReader<K extends WritableComparable<?>,U extends Writable>
          Proxy class for a RecordReader participating in the join framework.
 

Fields in org.apache.hadoop.mapreduce.lib.join declared as WritableComparable
protected  K CompositeRecordReader.key
           
 

Fields in org.apache.hadoop.mapreduce.lib.join with type parameters of type WritableComparable
protected  Class<? extends WritableComparable> CompositeRecordReader.keyclass
           
 

Uses of WritableComparable in org.apache.hadoop.mapreduce.lib.output
 

Methods in org.apache.hadoop.mapreduce.lib.output with type parameters of type WritableComparable
static
<K extends WritableComparable<?>,V extends Writable>
Writable
MapFileOutputFormat.getEntry(org.apache.hadoop.io.MapFile.Reader[] readers, Partitioner<K,V> partitioner, K key, V value)
          Get an entry from output generated by this class.
 

Methods in org.apache.hadoop.mapreduce.lib.output that return types with arguments of type WritableComparable
 RecordWriter<WritableComparable<?>,Writable> MapFileOutputFormat.getRecordWriter(TaskAttemptContext context)
           
static Class<? extends WritableComparable> SequenceFileAsBinaryOutputFormat.getSequenceFileOutputKeyClass(JobContext job)
          Get the key class for the SequenceFile
 

Uses of WritableComparable in org.apache.hadoop.mapreduce.lib.partition
 

Classes in org.apache.hadoop.mapreduce.lib.partition with type parameters of type WritableComparable
 class TotalOrderPartitioner<K extends WritableComparable<?>,V>
          Partitioner effecting a total order by reading split points from an externally generated source.
 

Uses of WritableComparable in org.apache.hadoop.record
 

Classes in org.apache.hadoop.record that implement WritableComparable
 class Record
          Deprecated. Replaced by Avro.
 

Constructor parameters in org.apache.hadoop.record with type arguments of type WritableComparable
RecordComparator(Class<? extends WritableComparable> recordClass)
          Deprecated. Construct a raw Record comparison implementation.
 

Uses of WritableComparable in org.apache.hadoop.record.meta
 

Classes in org.apache.hadoop.record.meta that implement WritableComparable
 class RecordTypeInfo
          Deprecated. Replaced by Avro.
 



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