Package org.apache.avro.mapred

Class AvroAsTextInputFormat

java.lang.Object

org.apache.hadoop.mapred.FileInputFormat<Text,Text>

org.apache.avro.mapred.AvroAsTextInputFormat

All Implemented Interfaces:

InputFormat<Text,Text>

public class AvroAsTextInputFormat
extends FileInputFormat<Text,Text>

An InputFormat for Avro data files, which converts each datum to string form in the input key. The input value is always empty. The string representation is JSON.

This InputFormat is useful for applications that wish to process Avro data using tools like MapReduce Streaming. By default, when pointed at a directory, this will silently skip over any files in it that do not have .avro extension. To instead include all files, set the avro.mapred.ignore.inputs.without.extension property to false.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapred.FileInputFormat

FileInputFormat.Counter

Field Summary

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

INPUT_DIR_NONRECURSIVE_IGNORE_SUBDIRS, INPUT_DIR_RECURSIVE, LOG, NUM_INPUT_FILES

Constructor Summary

Constructors

Constructor	Description
AvroAsTextInputFormat()

Method Summary

Modifier and Type	Method	Description
RecordReader<Text,Text>	getRecordReader(InputSplit split, JobConf job, Reporter reporter)
protected FileStatus[]	listStatus(JobConf job)

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

addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, makeSplit, makeSplit, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize

Methods inherited from class java.lang.Object

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

Constructor Details

AvroAsTextInputFormat

public AvroAsTextInputFormat()

Method Details

listStatus

protected FileStatus[] listStatus(JobConf job)
                           throws IOException

Overrides:

listStatus in class FileInputFormat<Text,Text>

Throws:

IOException

getRecordReader

public RecordReader<Text,Text> getRecordReader(InputSplit split,
 JobConf job,
 Reporter reporter)
                                        throws IOException

Specified by:

getRecordReader in interface InputFormat<Text,Text>

Specified by:

getRecordReader in class FileInputFormat<Text,Text>

Throws:

IOException