Interface | Description |
---|---|
GSet<K,E extends K> |
A
GSet is set,
which supports the GSet.get(Object) operation. |
IdGenerator |
Generic ID generator
used for generating various types of number sequences.
|
IndexedSortable |
Interface for collections capable of being sorted by
IndexedSorter
algorithms. |
IndexedSorter |
Interface for sort algorithms accepting
IndexedSortable items. |
LightWeightCache.Entry |
Entries of
LightWeightCache . |
LightWeightGSet.LinkedElement |
Elements of
LightWeightGSet . |
Progressable |
A facility for reporting progress.
|
ServicePlugin |
Service plug-in interface.
|
Tool |
A tool interface that supports handling of generic command-line options.
|
Class | Description |
---|---|
AsyncDiskService | |
ClassUtil | |
Daemon |
A thread that has called
Thread.setDaemon(boolean) with true. |
Daemon.DaemonFactory |
Provide a factory for named daemon threads,
for use in ExecutorServices constructors
|
DataChecksum |
This class provides inteface and utilities for processing checksums for
DFS data transfers.
|
DiskChecker |
Class that provides utility functions for checking disk problem
|
ExitUtil |
Facilitates hooking process termination for tests and debugging.
|
GenericOptionsParser |
GenericOptionsParser is a utility to parse command line
arguments generic to the Hadoop framework. |
GenericsUtil |
Contains utility methods for dealing with Java Generics.
|
GSetByHashMap<K,E extends K> | |
HeapSort |
An implementation of the core algorithm of HeapSort.
|
HostsFileReader | |
LightWeightCache<K,E extends K> |
A low memory footprint Cache which extends
LightWeightGSet . |
LightWeightGSet<K,E extends K> |
A low memory footprint
GSet implementation,
which uses an array for storing the elements
and linked lists for collision resolution. |
LineReader |
A class that provides a line reader from an input stream.
|
MergeSort |
An implementation of the core algorithm of MergeSort.
|
NativeCodeLoader |
A helper to load the native hadoop code i.e.
|
NativeLibraryChecker | |
Options |
This class allows generic access to variable length type-safe parameter
lists.
|
Options.BooleanOption | |
Options.ClassOption | |
Options.FSDataInputStreamOption | |
Options.FSDataOutputStreamOption | |
Options.IntegerOption | |
Options.LongOption | |
Options.PathOption | |
Options.ProgressableOption | |
Options.StringOption | |
PlatformName |
A helper class for getting build-info of the java-vm.
|
PrintJarMainClass |
A micro-application that prints the main class name out of a jar file.
|
PriorityQueue<T> |
A PriorityQueue maintains a partial ordering of its elements such that the
least element can always be found in constant time.
|
ProgramDriver |
A driver that is used to run programs added to it
|
Progress |
Utility to assist with generation of progress reports.
|
ProtoUtil | |
PureJavaCrc32 |
A pure-java implementation of the CRC32 checksum that uses
the same polynomial as the built-in native CRC32.
|
PureJavaCrc32C |
A pure-java implementation of the CRC32 checksum that uses
the CRC32-C polynomial, the same polynomial used by iSCSI
and implemented on many Intel chipsets supporting SSE4.2.
|
QuickSort |
An implementation of the core algorithm of QuickSort.
|
ReflectionUtils |
General reflection utils
|
RunJar |
Run a Hadoop job jar.
|
SequentialNumber |
Sequential number generator.
|
ServletUtil | |
Shell |
A base class for running a Unix command.
|
Shell.ShellCommandExecutor |
A simple shell command executor.
|
ShutdownHookManager |
The
ShutdownHookManager enables running shutdownHook
in a deterministic order, higher priority first. |
ShutdownThreadsHelper |
Helper class to shutdown
Thread s and ExecutorService s. |
StringInterner |
Provides equivalent behavior to String.intern() to optimize performance,
whereby does not consume memory in the permanent generation.
|
StringUtils |
General string utils
|
ThreadUtil | |
Time |
Utility methods for getting the time and computing intervals.
|
ToolRunner |
A utility to help run
Tool s. |
UTF8ByteArrayUtils | |
VersionInfo |
This class returns build information about Hadoop components.
|
VersionUtil | |
XMLUtils |
General xml utilities.
|
ZKUtil |
Utilities for working with ZooKeeper.
|
ZKUtil.ZKAuthInfo |
An authentication token passed to ZooKeeper.addAuthInfo
|
Enum | Description |
---|---|
DataChecksum.Type |
The checksum types
|
SignalLogger |
This class logs a message whenever we're about to exit on a UNIX signal.
|
StringUtils.TraditionalBinaryPrefix |
The traditional binary prefixes, kilo, mega, ..., exa,
which can be represented by a 64-bit integer.
|
Exception | Description |
---|---|
DiskChecker.DiskErrorException | |
DiskChecker.DiskOutOfSpaceException | |
ExitUtil.ExitException | |
ExitUtil.HaltException | |
Shell.ExitCodeException |
This is an IOException with exit code added.
|
ZKUtil.BadAclFormatException | |
ZKUtil.BadAuthFormatException |
Copyright © 2013 Apache Software Foundation. All rights reserved.