org.apache.hadoop.io

类 SetFile.Writer

java.lang.Object

org.apache.hadoop.io.MapFile.Writer

org.apache.hadoop.io.SetFile.Writer

所有已实现的接口:

Closeable, AutoCloseable

封闭类:

SetFile

public static class SetFile.Writer
extends MapFile.Writer

Write a new set file.

构造器概要

构造器

构造器和说明
SetFile.Writer(Configuration conf, FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass, SequenceFile.CompressionType compress) Create a set naming the element class and compression type.
SetFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, SequenceFile.CompressionType compress) Create a set naming the element comparator and compression type.
SetFile.Writer(FileSystem fs, String dirName, Class<? extends WritableComparable> keyClass) 已过时。 pass a Configuration too

方法概要

方法

限定符和类型	方法和说明
void	append(WritableComparable key) Append a key to a set.

从类继承的方法 org.apache.hadoop.io.MapFile.Writer

append, close, getIndexInterval, setIndexInterval, setIndexInterval

从类继承的方法 java.lang.Object

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

构造器详细资料

SetFile.Writer

public SetFile.Writer(FileSystem fs,
              String dirName,
              Class<? extends WritableComparable> keyClass)
               throws IOException

已过时。 pass a Configuration too

Create the named set for keys of the named class.

抛出:

IOException

SetFile.Writer

public SetFile.Writer(Configuration conf,
              FileSystem fs,
              String dirName,
              Class<? extends WritableComparable> keyClass,
              SequenceFile.CompressionType compress)
               throws IOException

Create a set naming the element class and compression type.

抛出:

IOException

SetFile.Writer

public SetFile.Writer(Configuration conf,
              FileSystem fs,
              String dirName,
              WritableComparator comparator,
              SequenceFile.CompressionType compress)
               throws IOException

Create a set naming the element comparator and compression type.

抛出:

IOException

方法详细资料

append

public void append(WritableComparable key)
            throws IOException

Append a key to a set. The key must be strictly greater than the previous key added to the set.

抛出:

IOException