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Uses of Writable in org.apache.hadoop.conf |
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Classes in org.apache.hadoop.conf that implement Writable | |
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class |
Configuration
Provides access to configuration parameters. |
Uses of Writable in org.apache.hadoop.fs |
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Classes in org.apache.hadoop.fs that implement Writable | |
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class |
ContentSummary
Store the summary of a content (a directory or a file). |
class |
FileChecksum
An abstract class representing file checksums for files. |
class |
FileStatus
Interface that represents the client side information for a file. |
class |
FsServerDefaults
Provides server default configuration values to clients. |
class |
FsStatus
This class is used to represent the capacity, free and used space on a FileSystem . |
class |
LocatedFileStatus
This class defines a FileStatus that includes a file's block locations. |
Uses of Writable in org.apache.hadoop.fs.permission |
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Classes in org.apache.hadoop.fs.permission that implement Writable | |
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class |
FsPermission
A class for file/directory permissions. |
Uses of Writable in org.apache.hadoop.io |
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Subinterfaces of Writable in org.apache.hadoop.io | |
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interface |
WritableComparable<T>
A Writable which is also Comparable . |
Classes in org.apache.hadoop.io that implement Writable | |
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class |
AbstractMapWritable
Abstract base class for MapWritable and SortedMapWritable Unlike org.apache.nutch.crawl.MapWritable, this class allows creation of MapWritable<Writable, MapWritable> so the CLASS_TO_ID and ID_TO_CLASS maps travel with the class instead of being static. |
class |
ArrayPrimitiveWritable
This is a wrapper class. |
class |
ArrayWritable
A Writable for arrays containing instances of a class. |
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 |
CompressedWritable
A base-class for Writables which store themselves compressed and lazily inflate on field access. |
class |
DoubleWritable
Writable for Double values. |
class |
EnumSetWritable<E extends Enum<E>>
A Writable wrapper for EnumSet. |
class |
FloatWritable
A WritableComparable for floats. |
class |
GenericWritable
A wrapper for Writable instances. |
class |
IntWritable
A WritableComparable for ints. |
class |
LongWritable
A WritableComparable for longs. |
class |
MapWritable
A Writable Map. |
class |
MD5Hash
A Writable for MD5 hash values. |
class |
NullWritable
Singleton Writable with no data. |
class |
ObjectWritable
A polymorphic Writable that writes an instance with it's class name. |
class |
ShortWritable
A WritableComparable for shorts. |
class |
SortedMapWritable
A Writable SortedMap. |
class |
Text
This class stores text using standard UTF8 encoding. |
class |
TwoDArrayWritable
A Writable for 2D arrays containing a matrix of instances of a class. |
class |
VersionedWritable
A base class for Writables that provides version checking. |
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 with type parameters of type Writable | ||
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static
|
WritableUtils.clone(T orig,
Configuration conf)
Make a copy of a writable object using serialization to a buffer. |
Methods in org.apache.hadoop.io that return Writable | |
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Writable |
GenericWritable.get()
Return the wrapped instance. |
Writable[] |
ArrayWritable.get()
|
Writable[][] |
TwoDArrayWritable.get()
|
Writable |
MapWritable.get(Object key)
|
Writable |
SortedMapWritable.get(Object key)
|
Writable |
WritableFactory.newInstance()
Return a new instance. |
static Writable |
WritableFactories.newInstance(Class<? extends Writable> c)
Create a new instance of a class with a defined factory. |
static Writable |
WritableFactories.newInstance(Class<? extends Writable> c,
Configuration conf)
Create a new instance of a class with a defined factory. |
Writable |
SortedMapWritable.put(WritableComparable key,
Writable value)
|
Writable |
MapWritable.put(Writable key,
Writable value)
|
Writable |
MapWritable.remove(Object key)
|
Writable |
SortedMapWritable.remove(Object key)
|
Methods in org.apache.hadoop.io that return types with arguments of type Writable | |
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Set<Map.Entry<Writable,Writable>> |
MapWritable.entrySet()
|
Set<Map.Entry<Writable,Writable>> |
MapWritable.entrySet()
|
Set<Map.Entry<WritableComparable,Writable>> |
SortedMapWritable.entrySet()
|
SortedMap<WritableComparable,Writable> |
SortedMapWritable.headMap(WritableComparable toKey)
|
Set<Writable> |
MapWritable.keySet()
|
SortedMap<WritableComparable,Writable> |
SortedMapWritable.subMap(WritableComparable fromKey,
WritableComparable toKey)
|
SortedMap<WritableComparable,Writable> |
SortedMapWritable.tailMap(WritableComparable fromKey)
|
Collection<Writable> |
MapWritable.values()
|
Collection<Writable> |
SortedMapWritable.values()
|
Methods in org.apache.hadoop.io with parameters of type Writable | |
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static void |
WritableUtils.cloneInto(Writable dst,
Writable src)
Deprecated. use ReflectionUtils.cloneInto instead. |
protected void |
AbstractMapWritable.copy(Writable other)
Used by child copy constructors. |
Writable |
SortedMapWritable.put(WritableComparable key,
Writable value)
|
Writable |
MapWritable.put(Writable key,
Writable value)
|
void |
GenericWritable.set(Writable obj)
Set the instance that is wrapped. |
void |
ArrayWritable.set(Writable[] values)
|
void |
TwoDArrayWritable.set(Writable[][] values)
|
static byte[] |
WritableUtils.toByteArray(Writable... writables)
Convert writables to a byte array |
Method parameters in org.apache.hadoop.io with type arguments of type Writable | |
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static long |
MapFile.fix(FileSystem fs,
Path dir,
Class<? extends Writable> keyClass,
Class<? extends Writable> valueClass,
boolean dryrun,
Configuration conf)
This method attempts to fix a corrupt MapFile by re-creating its index. |
static long |
MapFile.fix(FileSystem fs,
Path dir,
Class<? extends Writable> keyClass,
Class<? extends Writable> valueClass,
boolean dryrun,
Configuration conf)
This method attempts to fix a corrupt MapFile by re-creating its index. |
static Writable |
WritableFactories.newInstance(Class<? extends Writable> c)
Create a new instance of a class with a defined factory. |
static Writable |
WritableFactories.newInstance(Class<? extends Writable> c,
Configuration conf)
Create a new instance of a class with a defined factory. |
void |
MapWritable.putAll(Map<? extends Writable,? extends Writable> t)
|
void |
MapWritable.putAll(Map<? extends Writable,? extends Writable> t)
|
void |
SortedMapWritable.putAll(Map<? extends WritableComparable,? extends Writable> t)
|
Constructors in org.apache.hadoop.io with parameters of type Writable | |
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ArrayWritable(Class<? extends Writable> valueClass,
Writable[] values)
|
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TwoDArrayWritable(Class valueClass,
Writable[][] values)
|
Constructor parameters in org.apache.hadoop.io with type arguments of type Writable | |
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ArrayWritable(Class<? extends Writable> valueClass)
|
|
ArrayWritable(Class<? extends Writable> valueClass,
Writable[] values)
|
Uses of Writable in org.apache.hadoop.io.serializer |
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Methods in org.apache.hadoop.io.serializer that return types with arguments of type Writable | |
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org.apache.hadoop.io.serializer.Deserializer<Writable> |
WritableSerialization.getDeserializer(Class<Writable> c)
|
org.apache.hadoop.io.serializer.Serializer<Writable> |
WritableSerialization.getSerializer(Class<Writable> c)
|
Method parameters in org.apache.hadoop.io.serializer with type arguments of type Writable | |
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org.apache.hadoop.io.serializer.Deserializer<Writable> |
WritableSerialization.getDeserializer(Class<Writable> c)
|
org.apache.hadoop.io.serializer.Serializer<Writable> |
WritableSerialization.getSerializer(Class<Writable> c)
|
Uses of Writable in org.apache.hadoop.mapred |
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Subinterfaces of Writable in org.apache.hadoop.mapred | |
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interface |
InputSplit
InputSplit represents the data to be processed by an
individual Mapper . |
Classes in org.apache.hadoop.mapred that implement Writable | |
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class |
ClusterStatus
Status information on the current state of the Map-Reduce cluster. |
class |
Counters
A set of named counters. |
static class |
Counters.Counter
A counter record, comprising its name and value. |
static class |
Counters.Group
Group of counters, comprising of counters from a particular
counter Enum class. |
class |
FileSplit
A section of an input file. |
class |
JobConf
A map/reduce job configuration. |
class |
JobQueueInfo
Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework. |
class |
MultiFileSplit
A sub-collection of input files. |
Methods in org.apache.hadoop.mapred with type parameters of type Writable | ||
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static
|
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 Writable | ||
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static
|
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 Writable | |
---|---|
RecordWriter<WritableComparable,Writable> |
MapFileOutputFormat.getRecordWriter(FileSystem ignored,
JobConf job,
String name,
Progressable progress)
|
static Class<? extends Writable> |
SequenceFileAsBinaryOutputFormat.getSequenceFileOutputValueClass(JobConf conf)
Get the value class for the SequenceFile |
Uses of Writable in org.apache.hadoop.mapred.join |
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Classes in org.apache.hadoop.mapred.join with type parameters of type Writable | |
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class |
ArrayListBackedIterator<X extends Writable>
This class provides an implementation of ResetableIterator. |
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 |
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 |
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 |
MultiFilterRecordReader<K extends WritableComparable,V extends Writable>
Base class for Composite join returning values derived from multiple sources, but generally not tuples. |
class |
OverrideRecordReader<K extends WritableComparable,V extends Writable>
Prefer the "rightmost" data source for this key. |
interface |
ResetableIterator<T extends Writable>
This defines an interface to a stateful Iterator that can replay elements added to it directly. |
class |
StreamBackedIterator<X extends Writable>
This class provides an implementation of ResetableIterator. |
class |
WrappedRecordReader<K extends WritableComparable,U extends Writable>
Proxy class for a RecordReader participating in the join framework. |
Classes in org.apache.hadoop.mapred.join that implement Writable | |
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class |
CompositeInputSplit
This InputSplit contains a set of child InputSplits. |
Constructors in org.apache.hadoop.mapred.join with parameters of type Writable | |
---|---|
TupleWritable(Writable[] vals)
Initialize tuple with storage; unknown whether any of them contain "written" values. |
Uses of Writable in org.apache.hadoop.mapred.lib.aggregate |
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Classes in org.apache.hadoop.mapred.lib.aggregate with type parameters of type Writable | |
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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 Writable in org.apache.hadoop.mapreduce |
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Subinterfaces of Writable in org.apache.hadoop.mapreduce | |
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interface |
Counter
A named counter that tracks the progress of a map/reduce job. |
interface |
CounterGroup
A group of Counter s that logically belong together. |
Classes in org.apache.hadoop.mapreduce that implement Writable | |
---|---|
class |
ClusterMetrics
Status information on the current state of the Map-Reduce cluster. |
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 |
JobStatus
Describes the current status of a job. |
class |
QueueAclsInfo
Class to encapsulate Queue ACLs for a particular user. |
class |
QueueInfo
Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework. |
class |
TaskAttemptID
TaskAttemptID represents the immutable and unique identifier for a task attempt. |
class |
TaskCompletionEvent
This is used to track task completion events on job tracker. |
class |
TaskID
TaskID represents the immutable and unique identifier for a Map or Reduce Task. |
class |
org.apache.hadoop.mapreduce.TaskReport
A report on the state of a task. |
class |
TaskTrackerInfo
Information about TaskTracker. |
Uses of Writable in org.apache.hadoop.mapreduce.counters |
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Subinterfaces of Writable in org.apache.hadoop.mapreduce.counters | |
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interface |
CounterGroupBase<T extends Counter>
The common counter group interface. |
Classes in org.apache.hadoop.mapreduce.counters that implement Writable | |
---|---|
class |
AbstractCounters<C extends Counter,G extends CounterGroupBase<C>>
An abstract class to provide common implementation for the Counters container in both mapred and mapreduce packages. |
Uses of Writable in org.apache.hadoop.mapreduce.lib.aggregate |
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Classes in org.apache.hadoop.mapreduce.lib.aggregate with type parameters of type Writable | |
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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 Writable in org.apache.hadoop.mapreduce.lib.input |
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Classes in org.apache.hadoop.mapreduce.lib.input that implement Writable | |
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class |
CombineFileSplit
A sub-collection of input files. |
Uses of Writable in org.apache.hadoop.mapreduce.lib.join |
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Classes in org.apache.hadoop.mapreduce.lib.join with type parameters of type Writable | |
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class |
ArrayListBackedIterator<X extends Writable>
This class provides an implementation of ResetableIterator. |
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 |
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 |
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 |
MultiFilterRecordReader<K extends WritableComparable<?>,V extends Writable>
Base class for Composite join returning values derived from multiple sources, but generally not tuples. |
class |
OverrideRecordReader<K extends WritableComparable<?>,V extends Writable>
Prefer the "rightmost" data source for this key. |
interface |
ResetableIterator<T extends Writable>
This defines an interface to a stateful Iterator that can replay elements added to it directly. |
class |
StreamBackedIterator<X extends Writable>
This class provides an implementation of ResetableIterator. |
class |
WrappedRecordReader<K extends WritableComparable<?>,U extends Writable>
Proxy class for a RecordReader participating in the join framework. |
Classes in org.apache.hadoop.mapreduce.lib.join that implement Writable | |
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class |
TupleWritable
Writable type storing multiple Writable s. |
Fields in org.apache.hadoop.mapreduce.lib.join declared as Writable | |
---|---|
protected X |
CompositeRecordReader.value
|
Methods in org.apache.hadoop.mapreduce.lib.join that return Writable | |
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Writable |
TupleWritable.get(int i)
Get ith Writable from Tuple. |
Methods in org.apache.hadoop.mapreduce.lib.join that return types with arguments of type Writable | |
---|---|
Iterator<Writable> |
TupleWritable.iterator()
Return an iterator over the elements in this tuple. |
Constructors in org.apache.hadoop.mapreduce.lib.join with parameters of type Writable | |
---|---|
TupleWritable(Writable[] vals)
Initialize tuple with storage; unknown whether any of them contain "written" values. |
Uses of Writable in org.apache.hadoop.mapreduce.lib.output |
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Methods in org.apache.hadoop.mapreduce.lib.output with type parameters of type Writable | ||
---|---|---|
static
|
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 Writable | ||
---|---|---|
static
|
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 Writable | |
---|---|
RecordWriter<WritableComparable<?>,Writable> |
MapFileOutputFormat.getRecordWriter(TaskAttemptContext context)
|
static Class<? extends Writable> |
SequenceFileAsBinaryOutputFormat.getSequenceFileOutputValueClass(JobContext job)
Get the value class for the SequenceFile |
Uses of Writable in org.apache.hadoop.record |
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Classes in org.apache.hadoop.record that implement Writable | |
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class |
Record
Deprecated. Replaced by Avro. |
Uses of Writable in org.apache.hadoop.record.meta |
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Classes in org.apache.hadoop.record.meta that implement Writable | |
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class |
RecordTypeInfo
Deprecated. Replaced by Avro. |
Uses of Writable in org.apache.hadoop.security.token |
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Classes in org.apache.hadoop.security.token that implement Writable | |
---|---|
class |
org.apache.hadoop.security.token.TokenIdentifier
An identifier that identifies a token, may contain public information about a token, including its kind (or type). |
Uses of Writable in org.apache.hadoop.security.token.delegation |
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Classes in org.apache.hadoop.security.token.delegation that implement Writable | |
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class |
org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier
|
Uses of Writable in org.apache.hadoop.util |
---|
Methods in org.apache.hadoop.util with parameters of type Writable | |
---|---|
static void |
ReflectionUtils.cloneWritableInto(Writable dst,
Writable src)
Deprecated. |
Uses of Writable in org.apache.hadoop.util.bloom |
---|
Classes in org.apache.hadoop.util.bloom that implement Writable | |
---|---|
class |
BloomFilter
Implements a Bloom filter, as defined by Bloom in 1970. |
class |
CountingBloomFilter
Implements a counting Bloom filter, as defined by Fan et al. |
class |
DynamicBloomFilter
Implements a dynamic Bloom filter, as defined in the INFOCOM 2006 paper. |
class |
org.apache.hadoop.util.bloom.Filter
Defines the general behavior of a filter. |
class |
RetouchedBloomFilter
Implements a retouched Bloom filter, as defined in the CoNEXT 2006 paper. |
Uses of Writable in org.apache.hadoop.yarn.conf |
---|
Classes in org.apache.hadoop.yarn.conf that implement Writable | |
---|---|
class |
YarnConfiguration
|
Uses of Writable in org.apache.hadoop.yarn.logaggregation |
---|
Classes in org.apache.hadoop.yarn.logaggregation that implement Writable | |
---|---|
static class |
AggregatedLogFormat.LogKey
|
Uses of Writable in org.apache.hadoop.yarn.security |
---|
Classes in org.apache.hadoop.yarn.security that implement Writable | |
---|---|
class |
AMRMTokenIdentifier
AMRMTokenIdentifier is the TokenIdentifier to be used by ApplicationMasters to authenticate to the ResourceManager. |
class |
ContainerTokenIdentifier
TokenIdentifier for a container. |
class |
NMTokenIdentifier
|
Uses of Writable in org.apache.hadoop.yarn.security.client |
---|
Classes in org.apache.hadoop.yarn.security.client that implement Writable | |
---|---|
class |
ClientToAMTokenIdentifier
|
class |
RMDelegationTokenIdentifier
Delegation Token Identifier that identifies the delegation tokens from the Resource Manager. |
|
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