| Package | Description |
|---|---|
| org.apache.hadoop.conf |
Configuration of system parameters.
|
| org.apache.hadoop.fs |
An abstract file system API.
|
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.kfs |
A client for the Kosmos filesystem (KFS)
|
| org.apache.hadoop.fs.s3 |
A distributed, block-based implementation of
FileSystem that uses Amazon S3
as a backing store. |
| org.apache.hadoop.fs.s3native |
A distributed implementation of
FileSystem for reading and writing files on
Amazon S3. |
| org.apache.hadoop.fs.viewfs | |
| 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.io.compress | |
| org.apache.hadoop.io.serializer |
This package provides a mechanism for using different serialization frameworks
in Hadoop.
|
| org.apache.hadoop.io.serializer.avro |
This package provides Avro serialization in Hadoop.
|
| org.apache.hadoop.mapred | |
| org.apache.hadoop.mapred.pipes | |
| org.apache.hadoop.mapreduce.lib.db | |
| org.apache.hadoop.mapreduce.lib.join | |
| org.apache.hadoop.mapreduce.lib.partition | |
| org.apache.hadoop.mapreduce.tools | |
| org.apache.hadoop.net |
Network-related classes.
|
| org.apache.hadoop.util |
Common utilities.
|
| Modifier and Type | Class and Description |
|---|---|
class |
Configured
Base class for things that may be configured with a
Configuration. |
| Modifier and Type | Class and Description |
|---|---|
class |
ChecksumFileSystem
Abstract Checksumed FileSystem.
|
class |
FileSystem
An abstract base class for a fairly generic filesystem.
|
class |
FilterFileSystem
A
FilterFileSystem contains
some other file system, which it uses as
its basic file system, possibly transforming
the data along the way or providing additional
functionality. |
class |
LocalFileSystem
Implement the FileSystem API for the checksumed local filesystem.
|
class |
RawLocalFileSystem
Implement the FileSystem API for the raw local filesystem.
|
class |
Trash
Provides a trash facility which supports pluggable Trash policies.
|
class |
TrashPolicy
This interface is used for implementing different Trash policies.
|
| Modifier and Type | Class and Description |
|---|---|
class |
FTPFileSystem
A
FileSystem backed by an FTP client provided by Apache Commons Net. |
| Modifier and Type | Class and Description |
|---|---|
class |
KosmosFileSystem
A FileSystem backed by KFS.
|
| Modifier and Type | Class and Description |
|---|---|
class |
MigrationTool
This class is a tool for migrating data from an older to a newer version
of an S3 filesystem.
|
class |
S3FileSystem
A block-based
FileSystem backed by
Amazon S3. |
| Modifier and Type | Class and Description |
|---|---|
class |
NativeS3FileSystem
A
FileSystem for reading and writing files stored on
Amazon S3. |
| Modifier and Type | Class and Description |
|---|---|
class |
ViewFileSystem
ViewFileSystem (extends the FileSystem interface) implements a client-side
mount table.
|
| Modifier and Type | Class and Description |
|---|---|
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 |
EnumSetWritable<E extends Enum<E>>
A Writable wrapper for EnumSet.
|
class |
GenericWritable
A wrapper for Writable instances.
|
class |
MapWritable
A Writable Map.
|
class |
ObjectWritable
A polymorphic Writable that writes an instance with it's class name.
|
class |
SortedMapWritable
A Writable SortedMap.
|
| Modifier and Type | Class and Description |
|---|---|
class |
BZip2Codec
This class provides output and input streams for bzip2 compression
and decompression.
|
class |
DefaultCodec |
class |
GzipCodec
This class creates gzip compressors/decompressors.
|
| Modifier and Type | Class and Description |
|---|---|
class |
WritableSerialization
A
Serialization for Writables that delegates to
Writable.write(java.io.DataOutput) and
Writable.readFields(java.io.DataInput). |
| Modifier and Type | Class and Description |
|---|---|
class |
AvroReflectSerialization
Serialization for Avro Reflect classes.
|
class |
AvroSerialization<T>
Base class for providing serialization to Avro types.
|
class |
AvroSpecificSerialization
Serialization for Avro Specific classes.
|
| Modifier and Type | Class and Description |
|---|---|
class |
JobClient
JobClient is the primary interface for the user-job to interact
with the cluster. |
| Modifier and Type | Class and Description |
|---|---|
class |
Submitter
The main entry point and job submitter.
|
| Modifier and Type | Class and Description |
|---|---|
class |
DataDrivenDBInputFormat<T extends DBWritable>
A InputFormat that reads input data from an SQL table.
|
class |
DBInputFormat<T extends DBWritable>
A InputFormat that reads input data from an SQL table.
|
class |
OracleDataDrivenDBInputFormat<T extends DBWritable>
A InputFormat that reads input data from an SQL table in an Oracle db.
|
| Modifier and Type | Class and Description |
|---|---|
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.
|
| Modifier and Type | Class and Description |
|---|---|
class |
BinaryPartitioner<V>
Partition
BinaryComparable keys using a configurable part of
the bytes array returned by BinaryComparable.getBytes(). |
class |
InputSampler<K,V>
Utility for collecting samples and writing a partition file for
TotalOrderPartitioner. |
class |
KeyFieldBasedComparator<K,V>
This comparator implementation provides a subset of the features provided
by the Unix/GNU Sort.
|
class |
KeyFieldBasedPartitioner<K2,V2>
Defines a way to partition keys based on certain key fields (also see
KeyFieldBasedComparator. |
class |
TotalOrderPartitioner<K extends WritableComparable<?>,V>
Partitioner effecting a total order by reading split points from
an externally generated source.
|
| Modifier and Type | Class and Description |
|---|---|
class |
CLI
Interprets the map reduce cli options
|
| Modifier and Type | Class and Description |
|---|---|
class |
AbstractDNSToSwitchMapping
This is a base class for DNS to Switch mappings.
|
class |
CachedDNSToSwitchMapping
A cached implementation of DNSToSwitchMapping that takes an
raw DNSToSwitchMapping and stores the resolved network location in
a cache.
|
class |
ScriptBasedMapping
This class implements the
DNSToSwitchMapping interface using a
script configured via the
CommonConfigurationKeysPublic.NET_TOPOLOGY_SCRIPT_FILE_NAME_KEY option. |
class |
SocksSocketFactory
Specialized SocketFactory to create sockets with a SOCKS proxy
|
| Modifier and Type | Interface and Description |
|---|---|
interface |
Tool
A tool interface that supports handling of generic command-line options.
|
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