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java.lang.Objectorg.apache.hadoop.mapred.LineRecordReader
public class LineRecordReader
Treats keys as offset in file and value as line.
| Nested Class Summary | |
|---|---|
static class |
LineRecordReader.LineReader
Deprecated. Use LineReader instead. |
| Constructor Summary | |
|---|---|
LineRecordReader(Configuration job,
FileSplit split)
|
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LineRecordReader(InputStream in,
long offset,
long endOffset,
Configuration job)
|
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LineRecordReader(InputStream in,
long offset,
long endOffset,
int maxLineLength)
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| Method Summary | |
|---|---|
void |
close()
Close this InputSplit to future operations. |
LongWritable |
createKey()
Create an object of the appropriate type to be used as a key. |
Text |
createValue()
Create an object of the appropriate type to be used as a value. |
long |
getPos()
Returns the current position in the input. |
float |
getProgress()
Get the progress within the split |
boolean |
next(LongWritable key,
Text value)
Read a line. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public LineRecordReader(Configuration job,
FileSplit split)
throws IOException
IOException
public LineRecordReader(InputStream in,
long offset,
long endOffset,
int maxLineLength)
public LineRecordReader(InputStream in,
long offset,
long endOffset,
Configuration job)
throws IOException
IOException| Method Detail |
|---|
public LongWritable createKey()
RecordReader
createKey in interface RecordReader<LongWritable,Text>public Text createValue()
RecordReader
createValue in interface RecordReader<LongWritable,Text>
public boolean next(LongWritable key,
Text value)
throws IOException
next in interface RecordReader<LongWritable,Text>key - the key to read data intovalue - the value to read data into
IOException
public float getProgress()
throws IOException
getProgress in interface RecordReader<LongWritable,Text>0.0 to 1.0.
IOException
public long getPos()
throws IOException
RecordReader
getPos in interface RecordReader<LongWritable,Text>IOException
public void close()
throws IOException
RecordReaderInputSplit to future operations.
close in interface RecordReader<LongWritable,Text>IOException
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