Uses of Class
org.apache.hadoop.classification.InterfaceAudience.Public

Packages that use InterfaceAudience.Public
org.apache.hadoop   
org.apache.hadoop.classification   
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.permission   
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.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.file.tfile   
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.metrics.file Implementation of the metrics package that writes the metrics to a file. 
org.apache.hadoop.metrics.ganglia Implementation of the metrics package that sends metric data to Ganglia
org.apache.hadoop.metrics.spi The Service Provider Interface for the Metrics API. 
org.apache.hadoop.net Network-related classes. 
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.compiler (DEPRECATED) This package contains classes needed for code generation from the hadoop record compiler. 
org.apache.hadoop.record.compiler.ant   
org.apache.hadoop.record.compiler.generated (DEPRECATED) This package contains code generated by JavaCC from the Hadoop record syntax file rcc.jj. 
org.apache.hadoop.record.meta   
org.apache.hadoop.util Common utilities. 
org.apache.hadoop.util.bloom   
 

Uses of InterfaceAudience.Public in org.apache.hadoop
 

Classes in org.apache.hadoop with annotations of type InterfaceAudience.Public
 class HadoopIllegalArgumentException
          Indicates that a method has been passed illegal or invalid argument.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.classification
 

Classes in org.apache.hadoop.classification with annotations of type InterfaceAudience.Public
 class InterfaceAudience
          Annotation to inform users of a package, class or method's intended audience.
 class InterfaceStability
          Annotation to inform users of how much to rely on a particular package, class or method not changing over time.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.conf
 

Classes in org.apache.hadoop.conf with annotations of type InterfaceAudience.Public
 interface Configurable
          Something that may be configured with a Configuration.
 class Configuration
          Provides access to configuration parameters.
 class Configured
          Base class for things that may be configured with a Configuration.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs
 

Classes in org.apache.hadoop.fs with annotations of type InterfaceAudience.Public
 class AbstractFileSystem
          This class provides an interface for implementors of a Hadoop file system (analogous to the VFS of Unix).
 class AvroFSInput
          Adapts an FSDataInputStream to Avro's SeekableInput interface.
 class BlockLocation
           
 class ChecksumException
          Thrown for checksum errors.
 class ChecksumFileSystem
          Abstract Checksumed FileSystem.
 class ContentSummary
          Store the summary of a content (a directory or a file).
 class CreateFlag
          CreateFlag specifies the file create semantic.
 class FileAlreadyExistsException
          Used when target file already exists for any operation and is not configured to be overwritten.
 class FileChecksum
          An abstract class representing file checksums for files.
 class FileContext
          The FileContext class provides an interface to the application writer for using the Hadoop file system.
 class FileStatus
          Interface that represents the client side information for a file.
 class FileSystem
          An abstract base class for a fairly generic filesystem.
 class FileUtil
          A collection of file-processing util methods
 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.
 interface FsConstants
          FileSystem related constants.
 class FSDataInputStream
          Utility that wraps a FSInputStream in a DataInputStream and buffers input through a BufferedInputStream.
 class FSDataOutputStream
          Utility that wraps a OutputStream in a DataOutputStream, buffers output through a BufferedOutputStream and creates a checksum file.
 class FSError
          Thrown for unexpected filesystem errors, presumed to reflect disk errors in the native filesystem.
 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 InvalidPathException
          Path string is invalid either because it has invalid characters or due to other file system specific reasons.
 class LocalFileSystem
          Implement the FileSystem API for the checksumed local filesystem.
 class Options
          This class contains options related to file system operations.
 class ParentNotDirectoryException
          Indicates that the parent of specified Path is not a directory as expected.
 class Path
          Names a file or directory in a FileSystem.
 interface PathFilter
           
 interface PositionedReadable
          Stream that permits positional reading.
 class RawLocalFileSystem
          Implement the FileSystem API for the raw local filesystem.
 interface Seekable
          Stream that permits seeking.
 interface Syncable
          This interface for flush/sync operation.
 class Trash
          Provides a trash feature.
 class UnsupportedFileSystemException
          File system for a given file system name/scheme is not supported
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs.ftp
 

Classes in org.apache.hadoop.fs.ftp with annotations of type InterfaceAudience.Public
 class FTPException
          A class to wrap a Throwable into a Runtime Exception.
 class FTPFileSystem
           A FileSystem backed by an FTP client provided by Apache Commons Net.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs.kfs
 

Classes in org.apache.hadoop.fs.kfs with annotations of type InterfaceAudience.Public
 class KosmosFileSystem
          A FileSystem backed by KFS.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs.permission
 

Classes in org.apache.hadoop.fs.permission with annotations of type InterfaceAudience.Public
 class AccessControlException
          Deprecated. Use AccessControlException instead.
 class FsPermission
          A class for file/directory permissions.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs.s3
 

Classes in org.apache.hadoop.fs.s3 with annotations of type InterfaceAudience.Public
 class MigrationTool
           This class is a tool for migrating data from an older to a newer version of an S3 filesystem.
 class S3Exception
          Thrown if there is a problem communicating with Amazon S3.
 class S3FileSystem
           A block-based FileSystem backed by Amazon S3.
 class S3FileSystemException
          Thrown when there is a fatal exception while using S3FileSystem.
 class VersionMismatchException
          Thrown when Hadoop cannot read the version of the data stored in S3FileSystem.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.fs.s3native
 

Classes in org.apache.hadoop.fs.s3native with annotations of type InterfaceAudience.Public
 class NativeS3FileSystem
           A FileSystem for reading and writing files stored on Amazon S3.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.io
 

Classes in org.apache.hadoop.io with annotations of type InterfaceAudience.Public
 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 ArrayFile
          A dense file-based mapping from integers to values.
 class ArrayWritable
          A Writable for arrays containing instances of a class.
 class BinaryComparable
          Interface supported by WritableComparable types supporting ordering/permutation by a representative set of bytes.
 class BloomMapFile
          This class extends MapFile and provides very much the same functionality.
 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.
 interface Closeable
          Deprecated. use java.io.Closeable
 class CompressedWritable
          A base-class for Writables which store themselves compressed and lazily inflate on field access.
 class DefaultStringifier<T>
          DefaultStringifier is the default implementation of the Stringifier interface which stringifies the objects using base64 encoding of the serialized version of the objects.
 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 IOUtils
          An utility class for I/O related functionality.
 class LongWritable
          A WritableComparable for longs.
 class MapFile
          A file-based map from keys to values.
 class MapWritable
          A Writable Map.
 class MD5Hash
          A Writable for MD5 hash values.
 class MultipleIOException
          Encapsulate a list of IOException into an IOException
 class NullWritable
          Singleton Writable with no data.
 class ObjectWritable
          A polymorphic Writable that writes an instance with it's class name.
 interface RawComparator<T>
           A Comparator that operates directly on byte representations of objects.
 class SequenceFile
          SequenceFiles are flat files consisting of binary key/value pairs.
 class SetFile
          A file-based set of keys.
 class SortedMapWritable
          A Writable SortedMap.
 interface Stringifier<T>
          Stringifier interface offers two methods to convert an object to a string representation and restore the object given its string representation.
 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 VersionMismatchException
          Thrown by VersionedWritable.readFields(DataInput) when the version of an object being read does not match the current implementation version as returned by VersionedWritable.getVersion().
 class VIntWritable
          A WritableComparable for integer values stored in variable-length format.
 class VLongWritable
          A WritableComparable for longs in a variable-length format.
 interface Writable
          A serializable object which implements a simple, efficient, serialization protocol, based on DataInput and DataOutput.
 interface WritableComparable<T>
          A Writable which is also Comparable.
 class WritableComparator
          A Comparator for WritableComparables.
 class WritableFactories
          Factories for non-public writables.
 interface WritableFactory
          A factory for a class of Writable.
 class WritableUtils
           
 

Uses of InterfaceAudience.Public in org.apache.hadoop.io.compress
 

Classes in org.apache.hadoop.io.compress with annotations of type InterfaceAudience.Public
 class BlockCompressorStream
          A CompressorStream which works with 'block-based' based compression algorithms, as opposed to 'stream-based' compression algorithms.
 class BlockDecompressorStream
          A DecompressorStream which works with 'block-based' based compression algorithms, as opposed to 'stream-based' compression algorithms.
 class BZip2Codec
          This class provides CompressionOutputStream and CompressionInputStream for compression and decompression.
 class CodecPool
          A global compressor/decompressor pool used to save and reuse (possibly native) compression/decompression codecs.
 interface CompressionCodec
          This class encapsulates a streaming compression/decompression pair.
 class CompressionCodecFactory
          A factory that will find the correct codec for a given filename.
 class CompressionInputStream
          A compression input stream.
 class CompressionOutputStream
          A compression output stream.
 interface Compressor
          Specification of a stream-based 'compressor' which can be plugged into a CompressionOutputStream to compress data.
 class CompressorStream
           
 interface Decompressor
          Specification of a stream-based 'de-compressor' which can be plugged into a CompressionInputStream to compress data.
 class DecompressorStream
           
 class DefaultCodec
           
 class GzipCodec
          This class creates gzip compressors/decompressors.
 class SplitCompressionInputStream
          An InputStream covering a range of compressed data.
 interface SplittableCompressionCodec
          This interface is meant to be implemented by those compression codecs which are capable to compress / de-compress a stream starting at any arbitrary position.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.io.file.tfile
 

Classes in org.apache.hadoop.io.file.tfile with annotations of type InterfaceAudience.Public
 class MetaBlockAlreadyExists
          Exception - Meta Block with the same name already exists.
 class MetaBlockDoesNotExist
          Exception - No such Meta Block with the given name.
 interface RawComparable
          Interface for objects that can be compared through RawComparator.
 class TFile
          A TFile is a container of key-value pairs.
 class Utils
          Supporting Utility classes used by TFile, and shared by users of TFile.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.io.serializer
 

Classes in org.apache.hadoop.io.serializer with annotations of type InterfaceAudience.Public
 class JavaSerialization
           An experimental Serialization for Java Serializable classes.
 class JavaSerializationComparator<T extends Serializable & Comparable<T>>
           A RawComparator that uses a JavaSerialization Deserializer to deserialize objects that are then compared via their Comparable interfaces.
 class WritableSerialization
          A Serialization for Writables that delegates to Writable.write(java.io.DataOutput) and Writable.readFields(java.io.DataInput).
 

Uses of InterfaceAudience.Public in org.apache.hadoop.io.serializer.avro
 

Classes in org.apache.hadoop.io.serializer.avro with annotations of type InterfaceAudience.Public
 interface AvroReflectSerializable
          Tag interface for Avro 'reflect' serializable classes.
 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.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.metrics.file
 

Classes in org.apache.hadoop.metrics.file with annotations of type InterfaceAudience.Public
 class FileContext
          Metrics context for writing metrics to a file.

This class is configured by setting ContextFactory attributes which in turn are usually configured through a properties file.

 

Uses of InterfaceAudience.Public in org.apache.hadoop.metrics.ganglia
 

Classes in org.apache.hadoop.metrics.ganglia with annotations of type InterfaceAudience.Public
 class GangliaContext
          Context for sending metrics to Ganglia.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.metrics.spi
 

Classes in org.apache.hadoop.metrics.spi with annotations of type InterfaceAudience.Public
 class AbstractMetricsContext
          The main class of the Service Provider Interface.
 class CompositeContext
           
 class MetricsRecordImpl
          An implementation of MetricsRecord.
 class MetricValue
          A Number that is either an absolute or an incremental amount.
 class NoEmitMetricsContext
          A MetricsContext that does not emit data, but, unlike NullContextWithUpdate, does save it for retrieval with getAllRecords().
 class NullContext
          Null metrics context: a metrics context which does nothing.
 class NullContextWithUpdateThread
          A null context which has a thread calling periodically when monitoring is started.
 class OutputRecord
          Represents a record of metric data to be sent to a metrics system.
 class Util
          Static utility methods
 

Uses of InterfaceAudience.Public in org.apache.hadoop.net
 

Classes in org.apache.hadoop.net with annotations of type InterfaceAudience.Public
 class CachedDNSToSwitchMapping
          A cached implementation of DNSToSwitchMapping that takes an raw DNSToSwitchMapping and stores the resolved network location in a cache.
 interface DNSToSwitchMapping
          An interface that should be implemented to allow pluggable DNS-name/IP-address to RackID resolvers.
 class ScriptBasedMapping
          This class implements the DNSToSwitchMapping interface using a script configured via net.topology.script.file.name .
 class SocksSocketFactory
          Specialized SocketFactory to create sockets with a SOCKS proxy
 class StandardSocketFactory
          Specialized SocketFactory to create sockets with a SOCKS proxy
 

Uses of InterfaceAudience.Public in org.apache.hadoop.record
 

Classes in org.apache.hadoop.record with annotations of type InterfaceAudience.Public
 class BinaryRecordInput
          Deprecated. Replaced by Avro.
 class BinaryRecordOutput
          Deprecated. Replaced by Avro.
 class Buffer
          Deprecated. Replaced by Avro.
 class CsvRecordInput
          Deprecated. Replaced by Avro.
 class CsvRecordOutput
          Deprecated. Replaced by Avro.
 interface Index
          Deprecated. Replaced by Avro.
 class Record
          Deprecated. Replaced by Avro.
 class RecordComparator
          Deprecated. Replaced by Avro.
 interface RecordInput
          Deprecated. Replaced by Avro.
 interface RecordOutput
          Deprecated. Replaced by Avro.
 class Utils
          Deprecated. Replaced by Avro.
 class XmlRecordInput
          Deprecated. Replaced by Avro.
 class XmlRecordOutput
          Deprecated. Replaced by Avro.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.record.compiler
 

Classes in org.apache.hadoop.record.compiler with annotations of type InterfaceAudience.Public
 class CodeBuffer
          Deprecated. Replaced by Avro.
 class Consts
          Deprecated. Replaced by Avro.
 class JBoolean
          Deprecated. Replaced by Avro.
 class JBuffer
          Deprecated. Replaced by Avro.
 class JByte
          Deprecated. Replaced by Avro.
 class JDouble
          Deprecated. Replaced by Avro.
 class JField<T>
          Deprecated. Replaced by Avro.
 class JFile
          Deprecated. Replaced by Avro.
 class JFloat
          Deprecated. Replaced by Avro.
 class JInt
          Deprecated. Replaced by Avro.
 class JLong
          Deprecated. Replaced by Avro.
 class JMap
          Deprecated. Replaced by Avro.
 class JRecord
          Deprecated. Replaced by Avro.
 class JString
          Deprecated. Replaced by Avro.
 class JType
          Deprecated. Replaced by Avro.
 class JVector
          Deprecated. Replaced by Avro.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.record.compiler.ant
 

Classes in org.apache.hadoop.record.compiler.ant with annotations of type InterfaceAudience.Public
 class RccTask
          Deprecated. Replaced by Avro.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.record.compiler.generated
 

Classes in org.apache.hadoop.record.compiler.generated with annotations of type InterfaceAudience.Public
 class ParseException
          Deprecated. Replaced by Avro.
 class Rcc
          Deprecated. Replaced by Avro.
 interface RccConstants
          Deprecated. Replaced by Avro.
 class RccTokenManager
          Deprecated. Replaced by Avro.
 class SimpleCharStream
          Deprecated. Replaced by Avro.
 class Token
          Deprecated. Replaced by Avro.
 class TokenMgrError
          Deprecated. Replaced by Avro.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.record.meta
 

Classes in org.apache.hadoop.record.meta with annotations of type InterfaceAudience.Public
 class FieldTypeInfo
          Deprecated. Replaced by Avro.
 class MapTypeID
          Deprecated. Replaced by Avro.
 class RecordTypeInfo
          Deprecated. Replaced by Avro.
 class StructTypeID
          Deprecated. Replaced by Avro.
 class TypeID
          Deprecated. Replaced by Avro.
 class Utils
          Deprecated. Replaced by Avro.
 class VectorTypeID
          Deprecated. Replaced by Avro.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.util
 

Classes in org.apache.hadoop.util with annotations of type InterfaceAudience.Public
 interface Progressable
          A facility for reporting progress.
 class ReflectionUtils
          General reflection utils
 interface Tool
          A tool interface that supports handling of generic command-line options.
 class ToolRunner
          A utility to help run Tools.
 

Uses of InterfaceAudience.Public in org.apache.hadoop.util.bloom
 

Classes in org.apache.hadoop.util.bloom with annotations of type InterfaceAudience.Public
 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 HashFunction
          Implements a hash object that returns a certain number of hashed values.
 interface RemoveScheme
          Defines the different remove scheme for retouched Bloom filters.
 class RetouchedBloomFilter
          Implements a retouched Bloom filter, as defined in the CoNEXT 2006 paper.
 



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