datafu.hourglass.avro

Class CombinedAvroKeyInputFormat<T>

java.lang.Object

org.apache.hadoop.mapreduce.InputFormat<K,V>

org.apache.hadoop.mapreduce.lib.input.FileInputFormat<K,V>

org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.avro.mapred.AvroKey<T>,org.apache.hadoop.io.NullWritable>

datafu.hourglass.avro.CombinedAvroKeyInputFormat<T>

Type Parameters:

T - Type of data to be read

public class CombinedAvroKeyInputFormat<T>
extends org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.avro.mapred.AvroKey<T>,org.apache.hadoop.io.NullWritable>

A combined input format for reading Avro data.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CombinedAvroKeyInputFormat.CombinedAvroKeyRecordReader<T>

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

org.apache.hadoop.mapreduce.lib.input.FileInputFormat.Counter

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat

SPLIT_MINSIZE_PERNODE, SPLIT_MINSIZE_PERRACK

Fields inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

DEFAULT_LIST_STATUS_NUM_THREADS, INPUT_DIR, INPUT_DIR_RECURSIVE, LIST_STATUS_NUM_THREADS, NUM_INPUT_FILES, PATHFILTER_CLASS, SPLIT_MAXSIZE, SPLIT_MINSIZE

Constructor Summary

Constructors

Constructor and Description
CombinedAvroKeyInputFormat()

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.RecordReader<org.apache.avro.mapred.AvroKey<T>,org.apache.hadoop.io.NullWritable>	createRecordReader(org.apache.hadoop.mapreduce.InputSplit inputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext context)

Methods inherited from class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat

createPool, createPool, getFileBlockLocations, getSplits, isSplitable, setMaxSplitSize, setMinSplitSizeNode, setMinSplitSizeRack

Methods inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getFormatMinSplitSize, getInputDirRecursive, getInputPathFilter, getInputPaths, getMaxSplitSize, getMinSplitSize, listStatus, makeSplit, makeSplit, setInputDirRecursive, setInputPathFilter, setInputPaths, setInputPaths, setMaxInputSplitSize, setMinInputSplitSize

Methods inherited from class java.lang.Object

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

Constructor Detail

CombinedAvroKeyInputFormat

public CombinedAvroKeyInputFormat()

Method Detail

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<org.apache.avro.mapred.AvroKey<T>,org.apache.hadoop.io.NullWritable> createRecordReader(org.apache.hadoop.mapreduce.InputSplit inputSplit,
                                                                                                                               org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                                                                                                 throws java.io.IOException

Specified by:

createRecordReader in class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.avro.mapred.AvroKey<T>,org.apache.hadoop.io.NullWritable>

Throws:

java.io.IOException