| 程序包 | 说明 |
|---|---|
| org.apache.hadoop.classification | |
| org.apache.hadoop.fs |
An abstract file system API.
|
| org.apache.hadoop.hdfs.protocol | |
| org.apache.hadoop.hdfs.server.datanode | |
| org.apache.hadoop.hdfs.server.namenode | |
| 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.mapreduce.lib.db | |
| org.apache.hadoop.mapreduce.lib.jobcontrol | |
| org.apache.hadoop.mapreduce.lib.partition | |
| 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.net |
Network-related classes.
|
| 程序包 | 说明 |
|---|---|
| org.apache.hadoop.metrics.util |
| 限定符和类型 | 类和说明 |
|---|---|
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.
|
| 限定符和类型 | 接口和说明 |
|---|---|
interface |
HasFileDescriptor
Having a FileDescriptor
|
| 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.
|
| 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 |
UnsupportedActionException
This exception is thrown when an operation is not supported.
|
| 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 | 类和说明 |
|---|---|
class |
BigDecimalSplitter
Implement DBSplitter over BigDecimal values.
|
class |
BooleanSplitter
Implement DBSplitter over boolean values.
|
class |
DataDrivenDBInputFormat<T extends DBWritable>
A InputFormat that reads input data from an SQL table.
|
static class |
DataDrivenDBInputFormat.DataDrivenDBInputSplit
A InputSplit that spans a set of rows
|
class |
DataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a SQL table,
using data-driven WHERE clause splits.
|
class |
DateSplitter
Implement DBSplitter over date/time values.
|
static class |
DBInputFormat.DBInputSplit
A InputSplit that spans a set of rows
|
static class |
DBInputFormat.NullDBWritable
A Class that does nothing, implementing DBWritable
|
class |
DBOutputFormat.DBRecordWriter
A RecordWriter that writes the reduce output to a SQL table
|
class |
DBRecordReader<T extends DBWritable>
A RecordReader that reads records from a SQL table.
|
interface |
DBSplitter
DBSplitter will generate DBInputSplits to use with DataDrivenDBInputFormat.
|
class |
FloatSplitter
Implement DBSplitter over floating-point values.
|
class |
IntegerSplitter
Implement DBSplitter over integer values.
|
class |
MySQLDataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a MySQL table via DataDrivenDBRecordReader
|
class |
MySQLDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a MySQL table.
|
class |
OracleDataDrivenDBInputFormat<T extends DBWritable>
A InputFormat that reads input data from an SQL table in an Oracle db.
|
class |
OracleDataDrivenDBRecordReader<T extends DBWritable>
A RecordReader that reads records from a Oracle table via DataDrivenDBRecordReader
|
class |
OracleDateSplitter
Implement DBSplitter over date/time values returned by an Oracle db.
|
class |
OracleDBRecordReader<T extends DBWritable>
A RecordReader that reads records from an Oracle SQL table.
|
class |
TextSplitter
Implement DBSplitter over text strings.
|
| 限定符和类型 | 类和说明 |
|---|---|
class |
ControlledJob
This class encapsulates a MapReduce job and its dependency.
|
class |
JobControl
This class encapsulates a set of MapReduce jobs and its dependency.
|
| 限定符和类型 | 类和说明 |
|---|---|
class |
BinaryPartitioner<V>
Partition
BinaryComparable keys using a configurable part of
the bytes array returned by BinaryComparable.getBytes(). |
| 限定符和类型 | 类和说明 |
|---|---|
class |
ContextFactory
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
interface |
MetricsContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
MetricsException
已过时。
in favor of
MetricsException. |
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. |
class |
MetricsUtil
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
interface |
Updater
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
| 限定符和类型 | 类和说明 |
|---|---|
class |
FileContext
已过时。
use
FileSink instead. |
| 限定符和类型 | 类和说明 |
|---|---|
class |
GangliaContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
| 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 |
|---|---|
class |
AbstractMetricsContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
CompositeContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
MetricsRecordImpl
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
MetricValue
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
NoEmitMetricsContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
NullContext
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
NullContextWithUpdateThread
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
OutputRecord
已过时。
in favor of
org.apache.hadoop.metrics2 usage. |
class |
Util
Static utility methods
|
| 限定符和类型 | 接口和说明 |
|---|---|
interface |
DNSToSwitchMapping
An interface that should be implemented to allow pluggable
DNS-name/IP-address to RackID resolvers.
|
Copyright © 2009 The Apache Software Foundation