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

Packages that use WritableComparable

Package	Description
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.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

Modifier and Type	Class and Description
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

Modifier and Type	Method and Description
WritableComparable	SortedMapWritable.firstKey()
WritableComparable	SetFile.Reader.get(WritableComparable key) Read the matching key from a set into key.
WritableComparable	MapFile.Reader.getClosest(WritableComparable key, Writable val) Finds the record that is the closest match to the specified key.
WritableComparable	MapFile.Reader.getClosest(WritableComparable key, Writable val, boolean before) Finds the record that is the closest match to the specified key.
WritableComparable	SortedMapWritable.lastKey()
WritableComparable	MapFile.Reader.midKey() Get the key at approximately the middle of the file.
WritableComparable	WritableComparator.newKey() Construct a new WritableComparable instance.

Methods in org.apache.hadoop.io that return types with arguments of type WritableComparable

Modifier and Type	Method and Description
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

Modifier and Type	Method and Description
void	SetFile.Writer.append(WritableComparable key) Append a key to a set.
void	MapFile.Writer.append(WritableComparable key, Writable val) Append a key/value pair to the map.
void	BloomMapFile.Writer.append(WritableComparable key, Writable val)
int	WritableComparator.compare(WritableComparable a, WritableComparable b) Compare two WritableComparables.
int	WritableComparator.compare(WritableComparable a, WritableComparable b) Compare two WritableComparables.
int	LongWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	LongWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
void	MapFile.Reader.finalKey(WritableComparable key) Reads the final key from the file.
WritableComparable	SetFile.Reader.get(WritableComparable key) Read the matching key from a set into key.
Writable	MapFile.Reader.get(WritableComparable key, Writable val) Return the value for the named key, or null if none exists.
Writable	BloomMapFile.Reader.get(WritableComparable key, Writable val) Fast version of the MapFile.Reader.get(WritableComparable, Writable) method.
WritableComparable	MapFile.Reader.getClosest(WritableComparable key, Writable val) Finds the record that is the closest match to the specified key.
WritableComparable	MapFile.Reader.getClosest(WritableComparable key, Writable val, boolean before) Finds the record that is the closest match to the specified key.
SortedMap<WritableComparable,Writable>	SortedMapWritable.headMap(WritableComparable toKey)
boolean	SetFile.Reader.next(WritableComparable key) Read the next key in a set into key.
boolean	MapFile.Reader.next(WritableComparable key, Writable val) Read the next key/value pair in the map into key and val.
boolean	BloomMapFile.Reader.probablyHasKey(WritableComparable key) Checks if this MapFile has the indicated key.
Writable	SortedMapWritable.put(WritableComparable key, Writable value)
boolean	SetFile.Reader.seek(WritableComparable key)
boolean	MapFile.Reader.seek(WritableComparable key) Positions the reader at the named key, or if none such exists, at the first entry after the named key.
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

Modifier and Type	Method and Description
static WritableComparator	WritableComparator.get(Class<? extends WritableComparable> c) For backwards compatibility.
static WritableComparator	WritableComparator.get(Class<? extends WritableComparable> c, Configuration conf) Get a comparator for a WritableComparable implementation.
static MapFile.Writer.Option	MapFile.Writer.keyClass(Class<? extends WritableComparable> value)
void	SortedMapWritable.putAll(Map<? extends WritableComparable,? extends Writable> t)

Constructor parameters in org.apache.hadoop.io with type arguments of type WritableComparable

Constructor and Description
BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass) Deprecated.
BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class<? extends Writable> valClass, SequenceFile.CompressionType compress, CompressionCodec codec, Progressable progress) Deprecated.
BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass, SequenceFile.CompressionType compress) Deprecated.
BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass, SequenceFile.CompressionType compress, Progressable progress) Deprecated.
MapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass) Deprecated. Use Writer(Configuration, Path, Option...) instead.
MapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass, SequenceFile.CompressionType compress) Deprecated. Use Writer(Configuration, Path, Option...) instead.
MapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass, SequenceFile.CompressionType compress, CompressionCodec codec, Progressable progress) Deprecated. Use Writer(Configuration, Path, Option...) instead.
MapFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, Class valClass, SequenceFile.CompressionType compress, Progressable progress) Deprecated. Use Writer(Configuration, Path, Option...) instead.
SequenceFile.Sorter(FileSystem fs, Class<? extends WritableComparable> keyClass, Class valClass, Configuration conf) Sort and merge files containing the named classes.
SetFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, SequenceFile.CompressionType compress) Create a set naming the element class and compression type.
SetFile.Writer(FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass) Deprecated. pass a Configuration too
WritableComparator(Class<? extends WritableComparable> keyClass) Construct for a WritableComparable implementation.
WritableComparator(Class<? extends WritableComparable> keyClass, boolean createInstances)
WritableComparator(Class<? extends WritableComparable> keyClass, Configuration conf, boolean createInstances)

Uses of WritableComparable in org.apache.hadoop.record

Classes in org.apache.hadoop.record that implement WritableComparable

Modifier and Type	Class and Description
class	Record Deprecated. Replaced by Avro.

Constructor parameters in org.apache.hadoop.record with type arguments of type WritableComparable

Constructor and Description
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

Modifier and Type	Class and Description
class	RecordTypeInfo Deprecated. Replaced by Avro.