org.apache.hadoop.hdfs

类 DFSClient.DFSDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

org.apache.hadoop.fs.FSDataInputStream

org.apache.hadoop.hdfs.DFSClient.DFSDataInputStream

所有已实现的接口:

Closeable, DataInput, AutoCloseable, HasFileDescriptor, PositionedReadable, Seekable

封闭类:

DFSClient

public static class DFSClient.DFSDataInputStream
extends FSDataInputStream

The Hdfs implementation of FSDataInputStream

字段概要

从类继承的字段 java.io.FilterInputStream

in

构造器概要

构造器

构造器和说明
DFSClient.DFSDataInputStream(DFSClient.DFSInputStream in)

方法概要

方法

限定符和类型	方法和说明
Block	getCurrentBlock() Returns the block containing the target position.
DatanodeInfo	getCurrentDatanode() Returns the datanode from which the stream is currently reading.
long	getVisibleLength()

从类继承的方法 org.apache.hadoop.fs.FSDataInputStream

getFileDescriptor, getPos, read, readFully, readFully, seek, seekToNewSource

从类继承的方法 java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

从类继承的方法 java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 java.io.Closeable

close

构造器详细资料

DFSClient.DFSDataInputStream

public DFSClient.DFSDataInputStream(DFSClient.DFSInputStream in)
                             throws IOException

抛出:

IOException

方法详细资料

getCurrentDatanode

public DatanodeInfo getCurrentDatanode()

Returns the datanode from which the stream is currently reading.

getCurrentBlock

public Block getCurrentBlock()

Returns the block containing the target position.

getVisibleLength

public long getVisibleLength()
                      throws IOException

返回:

The visible length of the file.

抛出:

IOException