com.hadoop.mapreduce

Class LzoTextInputFormat

java.lang.Object

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

org.apache.hadoop.mapreduce.lib.input.FileInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

org.apache.hadoop.mapreduce.lib.input.TextInputFormat

com.hadoop.mapreduce.LzoTextInputFormat

public class LzoTextInputFormat
extends org.apache.hadoop.mapreduce.lib.input.TextInputFormat

An InputFormat for lzop compressed text files. Files are broken into lines. Either linefeed or carriage-return are used to signal end of line. Keys are the position in the file, and values are the line of text.

See LzoInputFormatCommon for a description of the boolean property lzo.text.input.format.ignore.nonlzo and how it affects the behavior of this input format.

Nested Class Summary

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.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
LzoTextInputFormat()

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>	createRecordReader(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext taskAttempt)
List<org.apache.hadoop.mapreduce.InputSplit>	getSplits(org.apache.hadoop.mapreduce.JobContext job)
protected boolean	isSplitable(org.apache.hadoop.mapreduce.JobContext context, org.apache.hadoop.fs.Path filename)
protected List<org.apache.hadoop.fs.FileStatus>	listStatus(org.apache.hadoop.mapreduce.JobContext job)

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

addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getFormatMinSplitSize, getInputDirRecursive, getInputPathFilter, getInputPaths, getMaxSplitSize, getMinSplitSize, 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

LzoTextInputFormat

public LzoTextInputFormat()

Method Detail

listStatus

protected List<org.apache.hadoop.fs.FileStatus> listStatus(org.apache.hadoop.mapreduce.JobContext job)
                                                    throws IOException

Overrides:

listStatus in class org.apache.hadoop.mapreduce.lib.input.FileInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

isSplitable

protected boolean isSplitable(org.apache.hadoop.mapreduce.JobContext context,
                              org.apache.hadoop.fs.Path filename)

Overrides:

isSplitable in class org.apache.hadoop.mapreduce.lib.input.TextInputFormat

getSplits

public List<org.apache.hadoop.mapreduce.InputSplit> getSplits(org.apache.hadoop.mapreduce.JobContext job)
                                                       throws IOException

Overrides:

getSplits in class org.apache.hadoop.mapreduce.lib.input.FileInputFormat<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text> createRecordReader(org.apache.hadoop.mapreduce.InputSplit split,
                                                                                                                                org.apache.hadoop.mapreduce.TaskAttemptContext taskAttempt)

Overrides:

createRecordReader in class org.apache.hadoop.mapreduce.lib.input.TextInputFormat