org.apache.hadoop.io

Class SetFile.Writer

java.lang.Object

org.apache.hadoop.io.MapFile.Writer

org.apache.hadoop.io.SetFile.Writer

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

SetFile

public static class SetFile.Writer
extends MapFile.Writer

Write a new set file.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.io.MapFile.Writer

MapFile.Writer.Option

Constructor Summary

Constructors

Constructor and Description
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) Deprecated. pass a Configuration too

Method Summary

Methods

Modifier and Type	Method and Description
void	append(WritableComparable key) Append a key to a set.

Methods inherited from class org.apache.hadoop.io.MapFile.Writer

append, close, comparator, compression, compression, getIndexInterval, keyClass, progressable, setIndexInterval, setIndexInterval, valueClass

Methods inherited from class java.lang.Object

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

Constructor Detail

SetFile.Writer

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

Deprecated. pass a Configuration too

Create the named set for keys of the named class.

Throws:

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.

Throws:

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.

Throws:

IOException

Method Detail

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.

Throws:

IOException