co.cask.format.avro.input

Class CombineAvroInputFormat

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.hadoop.io.NullWritable,co.cask.cdap.api.data.format.StructuredRecord>

co.cask.format.avro.input.CombineAvroInputFormat

public class CombineAvroInputFormat
extends org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.hadoop.io.NullWritable,co.cask.cdap.api.data.format.StructuredRecord>

Combined input format that tracks which file each avro record was read from.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CombineAvroInputFormat.WrapperReader A wrapper class that's responsible for delegating to a corresponding RecordReader in PathTrackingInputFormat.

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

INPUT_DIR, INPUT_DIR_RECURSIVE, NUM_INPUT_FILES, PATHFILTER_CLASS, SPLIT_MAXSIZE, SPLIT_MINSIZE

Constructor Summary

Constructors

Constructor and Description
CombineAvroInputFormat()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,co.cask.cdap.api.data.format.StructuredRecord>	createRecordReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context) Creates a RecordReader that delegates to some other RecordReader for each path in the input split.

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, 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

CombineAvroInputFormat

public CombineAvroInputFormat()

Method Detail

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.NullWritable,co.cask.cdap.api.data.format.StructuredRecord> createRecordReader(org.apache.hadoop.mapreduce.InputSplit split,
                                                                                                                                                    org.apache.hadoop.mapreduce.TaskAttemptContext context)
                                                                                                                                             throws IOException

Creates a RecordReader that delegates to some other RecordReader for each path in the input split.

Specified by:

createRecordReader in class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.hadoop.io.NullWritable,co.cask.cdap.api.data.format.StructuredRecord>

Throws:

IOException