Package ml.shifu.guagua.hadoop.io

Class GuaguaSequenceAsTextRecordReader

java.lang.Object

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

ml.shifu.guagua.hadoop.io.GuaguaSequenceAsTextRecordReader

All Implemented Interfaces:

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

public class GuaguaSequenceAsTextRecordReader
extends GuaguaSequenceRecordReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

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

Copy some code from SequenceFileAsTextRecordReader 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 GuaguaSequenceAsTextRecordReader(fileSplit));
 

Constructor Summary

Constructors

Constructor	Description
GuaguaSequenceAsTextRecordReader()
GuaguaSequenceAsTextRecordReader(ml.shifu.guagua.io.GuaguaFileSplit split)
GuaguaSequenceAsTextRecordReader(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

GuaguaSequenceAsTextRecordReader

public GuaguaSequenceAsTextRecordReader()
                                 throws IOException

Throws:

IOException

GuaguaSequenceAsTextRecordReader

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

Throws:

IOException

GuaguaSequenceAsTextRecordReader

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

Throws:

IOException