程序包 | 说明 |
---|---|
org.apache.hadoop.fs |
An abstract file system API.
|
org.apache.hadoop.hdfs |
A distributed implementation of
FileSystem . |
org.apache.hadoop.hdfs.protocol | |
org.apache.hadoop.hdfs.security.token.block | |
org.apache.hadoop.hdfs.security.token.delegation | |
org.apache.hadoop.hdfs.server.datanode | |
org.apache.hadoop.hdfs.server.namenode | |
org.apache.hadoop.hdfs.tools.offlineImageViewer | |
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.log.metrics | |
org.apache.hadoop.mapred |
A software framework for easily writing applications which process vast
amounts of data (multi-terabyte data-sets) parallelly on large clusters
(thousands of nodes) built of commodity hardware in a reliable, fault-tolerant
manner.
|
org.apache.hadoop.mapreduce | |
org.apache.hadoop.mapreduce.lib.input | |
org.apache.hadoop.mapreduce.security.token | |
org.apache.hadoop.metrics |
Note, this package is deprecated in favor of
org.apache.hadoop.metrics2 usage. |
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.jvm | |
org.apache.hadoop.metrics.spi |
Note, this package is deprecated in favor of
org.apache.hadoop.metrics2 usage. |
org.apache.hadoop.metrics.util | |
org.apache.hadoop.security.token | |
org.apache.hadoop.util |
Common utilities.
|
限定符和类型 | 接口和说明 |
---|---|
interface |
HasFileDescriptor
Having a FileDescriptor
|
限定符和类型 | 方法和说明 |
---|---|
static int |
FileSystem.getCacheSize()
Get the number of entries in the filesystem cache
|
限定符和类型 | 类和说明 |
---|---|
static class |
DFSClient.Renewer |
static class |
HftpFileSystem.TokenManager |
static class |
HsftpFileSystem.TokenManager |
限定符和类型 | 类和说明 |
---|---|
class |
BlockLocalPathInfo
A block and the full path information to the block data file and
the metadata file stored on the local file system.
|
class |
LayoutVersion
This class tracks changes in the layout version of HDFS.
|
限定符和类型 | 类和说明 |
---|---|
static class |
BlockTokenIdentifier.Renewer |
限定符和类型 | 类和说明 |
---|---|
class |
DelegationTokenRenewer<T extends FileSystem & DelegationTokenRenewer.Renewable>
A daemon thread that waits for the next file system to renew.
|
限定符和类型 | 类和说明 |
---|---|
class |
BlockMetadataHeader
BlockMetadataHeader manages metadata for data blocks on Datanodes.
|
限定符和类型 | 类和说明 |
---|---|
class |
BlockPlacementPolicy
This interface is used for choosing the desired number of targets
for placing block replicas.
|
static class |
BlockPlacementPolicy.NotEnoughReplicasException |
class |
BlockPlacementPolicyDefault
The class is responsible for choosing the desired number of targets
for placing block replicas.
|
class |
UnsupportedActionException
This exception is thrown when an operation is not supported.
|
限定符和类型 | 类和说明 |
---|---|
class |
DepthCounter
Utility class for tracking descent into the structure of the
Visitor class (ImageVisitor, EditsVisitor etc.)
|
class |
NameDistributionVisitor
File name distribution visitor.
|
class |
OfflineImageViewer
OfflineImageViewer to dump the contents of an Hadoop image file to XML
or the console.
|
限定符和类型 | 类和说明 |
---|---|
class |
ReadaheadPool
Manages a pool of threads which can issue readahead requests on file descriptors.
|
限定符和类型 | 方法和说明 |
---|---|
static long |
EventCounter.getError() |
static long |
EventCounter.getFatal() |
static long |
EventCounter.getInfo() |
static long |
EventCounter.getWarn() |
限定符和类型 | 类和说明 |
---|---|
static class |
JobClient.Renewer |
限定符和类型 | 方法和说明 |
---|---|
static ResourceBundle |
CounterGroup.getResourceBundle(String enumClassName)
Returns the specified resource bundle, or throws an exception.
|
限定符和类型 | 类和说明 |
---|---|
class |
DelegatingInputFormat<K,V>
An
InputFormat that delegates behavior of paths to multiple other
InputFormats. |
class |
DelegatingMapper<K1,V1,K2,V2>
An
Mapper that delegates behavior of paths to multiple other
mappers. |
class |
DelegatingRecordReader<K,V>
This is a delegating RecordReader, which delegates the functionality to the
underlying record reader in
TaggedInputSplit |
限定符和类型 | 类和说明 |
---|---|
static class |
JobTokenIdentifier.Renewer |
限定符和类型 | 接口和说明 |
---|---|
interface |
MetricsContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
interface |
MetricsRecord
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
MetricsServlet
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
限定符和类型 | 字段和说明 |
---|---|
protected static String |
FileContext.FILE_NAME_PROPERTY
已过时。
|
protected static String |
FileContext.PERIOD_PROPERTY
已过时。
|
限定符和类型 | 方法和说明 |
---|---|
void |
FileContext.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
Emits a metrics record to a file.
|
void |
FileContext.flush()
已过时。
Flushes the output writer, forcing updates to disk.
|
String |
FileContext.getFileName()
已过时。
Returns the configured file name, or null.
|
void |
FileContext.init(String contextName,
ContextFactory factory)
已过时。
|
void |
FileContext.startMonitoring()
已过时。
Starts or restarts monitoring, by opening in append-mode, the
file specified by the
fileName attribute,
if specified. |
void |
FileContext.stopMonitoring()
已过时。
Stops monitoring, closing the file.
|
构造器和说明 |
---|
FileContext()
已过时。
Creates a new instance of FileContext
|
限定符和类型 | 方法和说明 |
---|---|
void |
GangliaContext.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
|
void |
GangliaContext.init(String contextName,
ContextFactory factory)
已过时。
|
构造器和说明 |
---|
GangliaContext()
已过时。
Creates a new instance of GangliaContext
|
限定符和类型 | 类和说明 |
---|---|
class |
JvmMetrics
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
限定符和类型 | 类和说明 |
---|---|
static class |
AbstractMetricsContext.MetricMap
已过时。
|
static class |
AbstractMetricsContext.TagMap
已过时。
|
限定符和类型 | 方法和说明 |
---|---|
void |
CompositeContext.close()
已过时。
|
protected void |
NullContextWithUpdateThread.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
Do-nothing version of emitRecord
|
protected void |
NullContext.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
Do-nothing version of emitRecord
|
protected void |
NoEmitMetricsContext.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
Do-nothing version of emitRecord
|
protected void |
CompositeContext.emitRecord(String contextName,
String recordName,
OutputRecord outRec)
已过时。
|
protected void |
CompositeContext.flush()
已过时。
|
void |
NullContextWithUpdateThread.init(String contextName,
ContextFactory factory)
已过时。
|
void |
NoEmitMetricsContext.init(String contextName,
ContextFactory factory)
已过时。
|
void |
CompositeContext.init(String contextName,
ContextFactory factory)
已过时。
|
boolean |
CompositeContext.isMonitoring()
已过时。
Return true if all subcontexts are monitoring.
|
MetricsRecord |
CompositeContext.newRecord(String recordName)
已过时。
|
void |
CompositeContext.registerUpdater(Updater updater)
已过时。
|
protected void |
NullContextWithUpdateThread.remove(MetricsRecordImpl record)
已过时。
Do-nothing version of remove
|
protected void |
NullContext.remove(MetricsRecordImpl record)
已过时。
Do-nothing version of remove
|
void |
NullContext.startMonitoring()
已过时。
Do-nothing version of startMonitoring
|
void |
CompositeContext.startMonitoring()
已过时。
|
void |
CompositeContext.stopMonitoring()
已过时。
|
void |
CompositeContext.unregisterUpdater(Updater updater)
已过时。
|
protected void |
NullContextWithUpdateThread.update(MetricsRecordImpl record)
已过时。
Do-nothing version of update
|
protected void |
NullContext.update(MetricsRecordImpl record)
已过时。
Do-nothing version of update
|
构造器和说明 |
---|
CompositeContext()
已过时。
|
NoEmitMetricsContext()
已过时。
Creates a new instance of NullContextWithUpdateThread
|
NullContext()
已过时。
Creates a new instance of NullContext
|
NullContextWithUpdateThread()
已过时。
Creates a new instance of NullContextWithUpdateThread
|
限定符和类型 | 类和说明 |
---|---|
class |
MetricsBase
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
限定符和类型 | 方法和说明 |
---|---|
void |
Token.setKind(Text newKind)
Set the token kind.
|
限定符和类型 | 类和说明 |
---|---|
class |
ClassUtil |
Copyright © 2009 The Apache Software Foundation