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java.lang.Object org.apache.hadoop.mapred.FileInputFormat<LongWritable,Text> org.apache.hadoop.mapred.TextInputFormat
TextInputFormat
instead.
@Deprecated public class TextInputFormat
An InputFormat
for plain 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..
Field Summary |
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Fields inherited from class org.apache.hadoop.mapred.FileInputFormat |
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LOG |
Constructor Summary | |
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TextInputFormat()
Deprecated. |
Method Summary | |
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void |
configure(JobConf conf)
Deprecated. Initializes a new instance from a JobConf . |
RecordReader<LongWritable,Text> |
getRecordReader(InputSplit genericSplit,
JobConf job,
Reporter reporter)
Deprecated. Get the RecordReader for the given InputSplit . |
protected boolean |
isSplitable(FileSystem fs,
Path file)
Deprecated. Is the given filename splitable? Usually, true, but if the file is stream compressed, it will not be. |
Methods inherited from class org.apache.hadoop.mapred.FileInputFormat |
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addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, listStatus, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TextInputFormat()
Method Detail |
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public void configure(JobConf conf)
JobConfigurable
JobConf
.
configure
in interface JobConfigurable
conf
- the configurationprotected boolean isSplitable(FileSystem fs, Path file)
FileInputFormat
FileInputFormat
implementations can override this and return
false
to ensure that individual input files are never split-up
so that Mapper
s process entire files.
isSplitable
in class FileInputFormat<LongWritable,Text>
fs
- the file system that the file is onfile
- the file name to check
public RecordReader<LongWritable,Text> getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter) throws IOException
InputFormat
RecordReader
for the given InputSplit
.
It is the responsibility of the RecordReader
to respect
record boundaries while processing the logical split to present a
record-oriented view to the individual task.
getRecordReader
in interface InputFormat<LongWritable,Text>
getRecordReader
in class FileInputFormat<LongWritable,Text>
genericSplit
- the InputSplit
job
- the job that this split belongs to
RecordReader
IOException
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