public abstract class BaseInputFormat extends Object implements InputFormat
Constructor and Description |
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BaseInputFormat() |
Modifier and Type | Method and Description |
---|---|
RecordReader |
createReader(InputSplit split)
Creates a reader from an input split
|
void |
readFields(DataInput in)
Deserialize the fields of this object from
in . |
double |
toDouble()
Convert Writable to double.
|
float |
toFloat()
Convert Writable to float.
|
int |
toInt()
Convert Writable to int.
|
long |
toLong()
Convert Writable to long.
|
void |
write(DataOutput out)
Serialize the fields of this object to
out . |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
createReader
public RecordReader createReader(InputSplit split) throws IOException, InterruptedException
InputFormat
createReader
in interface InputFormat
split
- the split to readIOException
InterruptedException
public void write(DataOutput out) throws IOException
Writable
out
.write
in interface Writable
out
- DataOuput
to serialize this object into.IOException
public void readFields(DataInput in) throws IOException
Writable
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
in interface Writable
in
- DataInput
to deseriablize this object from.IOException
public double toDouble()
Writable
public float toFloat()
Writable
public int toInt()
Writable
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