| Package | Description |
|---|---|
| org.apache.hadoop.crypto.key |
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.
|
| org.apache.hadoop.fs |
An abstract file system API.
|
| org.apache.hadoop.fs.ftp | |
| org.apache.hadoop.fs.impl |
This package contains implementation classes for use inside
filesystems.
|
| org.apache.hadoop.fs.local |
Filesystem implementations that allow Hadoop to read directly from
the local file system.
|
| org.apache.hadoop.fs.sftp |
SFTP FileSystem package.
|
| org.apache.hadoop.fs.statistics |
This package contains support for statistic collection and reporting.
|
| org.apache.hadoop.fs.statistics.impl |
Implementation support for statistics.
|
| org.apache.hadoop.fs.viewfs |
ViewFileSystem and ViewFileSystemOverloadScheme classes.
|
| org.apache.hadoop.ha | |
| 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.ipc |
Tools to help define network clients and servers.
|
| org.apache.hadoop.metrics2.source | |
| org.apache.hadoop.security | |
| org.apache.hadoop.security.alias |
Provides the hadoop credential provider API.
|
| org.apache.hadoop.security.authorize |
Support for service-level authorization.
|
| org.apache.hadoop.security.token |
Support for delegation tokens.
|
| org.apache.hadoop.service |
Support for services.
|
| org.apache.hadoop.service.launcher |
This package contains classes, interfaces and exceptions to launch
YARN services from the command line.
|
| org.apache.hadoop.tools | |
| org.apache.hadoop.util |
Common utilities.
|
| org.apache.hadoop.util.curator |
This package provides utilities to interact with Curator ZooKeeper.
|
| Class | Description |
|---|---|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| DataChecksum |
This class provides interface and utilities for processing checksums for
DFS data transfers.
|
| DataChecksum.Type |
The checksum types
|
| DiskValidator |
A interface for disk validators.
|
| Progressable |
A facility for reporting progress.
|
| Shell |
A base class for running a Shell command.
|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| DataChecksum.Type |
The checksum types
|
| Progressable |
A facility for reporting progress.
|
| Class | Description |
|---|---|
| WeakReferenceMap |
A map of keys type K to objects of type V which uses weak references,
so does lot leak memory through long-lived references
at the expense of losing references when GC takes place..
|
| Class | Description |
|---|---|
| DataChecksum.Type |
The checksum types
|
| Class | Description |
|---|---|
| Progressable |
A facility for reporting progress.
|
| Class | Description |
|---|---|
| JsonSerialization |
Support for marshalling objects to and from JSON.
|
| Class | Description |
|---|---|
| OperationDuration |
Little duration counter.
|
| Class | Description |
|---|---|
| Progressable |
A facility for reporting progress.
|
| Class | Description |
|---|---|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| Progress |
Utility to assist with generation of progress reports.
|
| Progressable |
A facility for reporting progress.
|
| Class | Description |
|---|---|
| LightWeightCache.Entry |
Entries of
LightWeightCache. |
| LightWeightGSet |
A low memory footprint
GSet implementation,
which uses an array for storing the elements
and linked lists for collision resolution. |
| LightWeightGSet.LinkedElement |
Elements of
LightWeightGSet. |
| Class | Description |
|---|---|
| GcTimeMonitor |
This class monitors the percentage of time the JVM is paused in GC within
the specified observation window, say 1 minute.
|
| JvmPauseMonitor |
Class which sets up a simple thread which runs in a loop sleeping
for a short interval of time.
|
| Class | Description |
|---|---|
| ExitCodeProvider |
Get the exit code of an exception.
|
| ExitUtil.ExitException |
An exception raised when a call to
ExitUtil.terminate(int) was
called and system exits were blocked. |
| Shell.ShellCommandExecutor |
A simple shell command executor.
|
| Timer |
Utility methods for getting the time and computing intervals.
|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| ZKUtil.ZKAuthInfo |
An authentication token passed to ZooKeeper.addAuthInfo
|
| Class | Description |
|---|---|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| MachineList |
Container class which holds a list of ip/host addresses and
answers membership queries.
|
| Class | Description |
|---|---|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| ExitCodeProvider |
Get the exit code of an exception.
|
| Class | Description |
|---|---|
| ExitCodeProvider |
Get the exit code of an exception.
|
| ExitUtil.ExitException |
An exception raised when a call to
ExitUtil.terminate(int) was
called and system exits were blocked. |
| GenericOptionsParser |
GenericOptionsParser is a utility to parse command line
arguments generic to the Hadoop framework. |
| Class | Description |
|---|---|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| Class | Description |
|---|---|
| AutoCloseableLock |
This is a wrap class of a ReentrantLock.
|
| BlockingThreadPoolExecutorService |
This ExecutorService blocks the submission of new tasks when its queue is
already full by using a semaphore.
|
| CleanerUtil.BufferCleaner |
Pass in an implementation of this interface to cleanup ByteBuffers.
|
| ComparableVersion |
Generic implementation of version comparison.
|
| CrcComposer |
Encapsulates logic for composing multiple CRCs into one or more combined CRCs
corresponding to concatenated underlying data ranges.
|
| Daemon |
A thread that has called
Thread.setDaemon(boolean) with true. |
| DataChecksum |
This class provides interface and utilities for processing checksums for
DFS data transfers.
|
| DataChecksum.Type |
The checksum types
|
| DiskChecker.DiskErrorException | |
| DiskValidator |
A interface for disk validators.
|
| ExitCodeProvider |
Get the exit code of an exception.
|
| ExitUtil.ExitException |
An exception raised when a call to
ExitUtil.terminate(int) was
called and system exits were blocked. |
| ExitUtil.HaltException |
An exception raised when a call to
ExitUtil.terminate(int) was
called and system halts were blocked. |
| FileBasedIPList |
FileBasedIPList loads a list of subnets in CIDR format and ip addresses from
a file.
|
| GcTimeMonitor |
This class monitors the percentage of time the JVM is paused in GC within
the specified observation window, say 1 minute.
|
| GcTimeMonitor.Builder | |
| GcTimeMonitor.GcData |
Encapsulates data about GC pauses measured at the specific timestamp.
|
| GcTimeMonitor.GcTimeAlertHandler |
The user can provide an instance of a class implementing this interface
when initializing a GcTimeMonitor to receive alerts when GC time
percentage exceeds the specified threshold.
|
| GSet |
A
GSet is set,
which supports the GSet.get(Object) operation. |
| HostsFileReader.HostDetails |
An atomic view of the included and excluded hosts
|
| IdentityHashStore.Visitor | |
| 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. |
| InstrumentedLock |
This is a debugging class that can be used by callers to track
whether a specific lock is being held for too long and periodically
log a warning and stack trace, if so.
|
| IntrusiveCollection |
Implements an intrusive doubly-linked list.
|
| IntrusiveCollection.Element |
An element contained in this list.
|
| IPList | |
| LightWeightGSet |
A low memory footprint
GSet implementation,
which uses an array for storing the elements
and linked lists for collision resolution. |
| LightWeightGSet.LinkedElement |
Elements of
LightWeightGSet. |
| MachineList.InetAddressFactory |
InetAddressFactory is used to obtain InetAddress from host.
|
| MapRCommonSecurityException | |
| MapRCommonSecurityUtil | |
| OperationDuration |
Little duration counter.
|
| Progress |
Utility to assist with generation of progress reports.
|
| Progressable |
A facility for reporting progress.
|
| RateLimiting |
Minimal subset of google rate limiter class.
|
| ReadWriteDiskValidatorMetrics |
The metrics for a directory generated by
ReadWriteDiskValidator. |
| SemaphoredDelegatingExecutor |
This ExecutorService blocks the submission of new tasks when its queue is
already full by using a semaphore.
|
| Shell |
A base class for running a Shell command.
|
| Shell.CommandExecutor | |
| Shell.OSType | |
| Shell.ShellCommandExecutor |
A simple shell command executor.
|
| ShutdownHookManager |
The
ShutdownHookManager enables running shutdownHook
in a deterministic order, higher priority first. |
| SignalLogger |
This class logs a message whenever we're about to exit on a UNIX signal.
|
| StopWatch |
A simplified StopWatch implementation which can measure times in nanoseconds.
|
| StringUtils.TraditionalBinaryPrefix |
The traditional binary prefixes, kilo, mega, ..., exa,
which can be represented by a 64-bit integer.
|
| SysInfo |
Plugin to calculate resource information on the system.
|
| Timer |
Utility methods for getting the time and computing intervals.
|
| Tool |
A tool interface that supports handling of generic command-line options.
|
| ZKUtil.BadAclFormatException | |
| ZKUtil.BadAuthFormatException | |
| ZKUtil.ZKAuthInfo |
An authentication token passed to ZooKeeper.addAuthInfo
|
| Class | Description |
|---|---|
| ZKUtil.ZKAuthInfo |
An authentication token passed to ZooKeeper.addAuthInfo
|
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