org.apache.nutch.segment
Class SegmentMerger.ObjectInputFormat

java.lang.Object
  org.apache.hadoop.mapred.FileInputFormat<K,V>
      org.apache.hadoop.mapred.SequenceFileInputFormat<org.apache.hadoop.io.Text,MetaWrapper>
          org.apache.nutch.segment.SegmentMerger.ObjectInputFormat

All Implemented Interfaces:

org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,MetaWrapper>

Enclosing class:

SegmentMerger

public static class SegmentMerger.ObjectInputFormat
extends org.apache.hadoop.mapred.SequenceFileInputFormat<org.apache.hadoop.io.Text,MetaWrapper>

Wraps inputs in an MetaWrapper, to permit merging different types in reduce and use additional metadata.

Field Summary

Fields inherited from class org.apache.hadoop.mapred.FileInputFormat

LOG

Constructor Summary

SegmentMerger.ObjectInputFormat()

Method Summary

org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.Text,MetaWrapper>

getRecordReader(org.apache.hadoop.mapred.InputSplit split, org.apache.hadoop.mapred.JobConf job, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.SequenceFileInputFormat

listPaths

Methods inherited from class org.apache.hadoop.mapred.FileInputFormat

addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplits, isSplitable, listStatus, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize, validateInput

Methods inherited from class java.lang.Object

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

Constructor Detail

SegmentMerger.ObjectInputFormat

public SegmentMerger.ObjectInputFormat()

Method Detail

getRecordReader

public org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.Text,MetaWrapper> getRecordReader(org.apache.hadoop.mapred.InputSplit split,
                                                                                                    org.apache.hadoop.mapred.JobConf job,
                                                                                                    org.apache.hadoop.mapred.Reporter reporter)
                                                                                             throws IOException

Specified by:

getRecordReader in interface org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.Text,MetaWrapper>

Overrides:

getRecordReader in class org.apache.hadoop.mapred.SequenceFileInputFormat<org.apache.hadoop.io.Text,MetaWrapper>

Throws:

IOException