Package ml.shifu.guagua.hadoop.io

Class GuaguaSequenceAsBinaryRecordReader

java.lang.Object

ml.shifu.guagua.hadoop.io.GuaguaSequenceRecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

ml.shifu.guagua.hadoop.io.GuaguaSequenceAsBinaryRecordReader

All Implemented Interfaces:

ml.shifu.guagua.io.GuaguaRecordReader<GuaguaWritableAdapter<org.apache.hadoop.io.BytesWritable>,GuaguaWritableAdapter<org.apache.hadoop.io.BytesWritable>>

public class GuaguaSequenceAsBinaryRecordReader
extends GuaguaSequenceRecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

A reader read HDFS sequence file key by key. The sequence key and value types are both BytesWritable.

Copy some code from SequenceFileAsBinaryInputFormat but to support GuaguaRecordReader interface.

If use default constructor, user should also call GuaguaSequenceRecordReader.initialize(GuaguaFileSplit) like in below:

 this.setRecordReader(new GuaguaSequenceAsBinaryRecordReader());
 this.getRecordReader().initialize(fileSplit);
 

or directly use other constructors:

 this.setRecordReader(new GuaguaSequenceAsBinaryRecordReader(fileSplit));
 

Constructor Summary

Constructors

Constructor	Description
GuaguaSequenceAsBinaryRecordReader()
GuaguaSequenceAsBinaryRecordReader(ml.shifu.guagua.io.GuaguaFileSplit split)
GuaguaSequenceAsBinaryRecordReader(org.apache.hadoop.conf.Configuration conf, ml.shifu.guagua.io.GuaguaFileSplit split)

Method Summary

Methods inherited from class ml.shifu.guagua.hadoop.io.GuaguaSequenceRecordReader

close, getCurrentKey, getCurrentValue, getProgress, initialize, nextKeyValue

Methods inherited from class java.lang.Object

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

Constructor Detail

GuaguaSequenceAsBinaryRecordReader

public GuaguaSequenceAsBinaryRecordReader()
                                   throws IOException

Throws:

IOException

GuaguaSequenceAsBinaryRecordReader

public GuaguaSequenceAsBinaryRecordReader(ml.shifu.guagua.io.GuaguaFileSplit split)
                                   throws IOException

Throws:

IOException

GuaguaSequenceAsBinaryRecordReader

public GuaguaSequenceAsBinaryRecordReader(org.apache.hadoop.conf.Configuration conf,
                                          ml.shifu.guagua.io.GuaguaFileSplit split)
                                   throws IOException

Throws:

IOException