protected static class DBInputFormat.DBInputSplit extends Object implements InputSplit
Constructor and Description |
---|
DBInputSplit()
Default Constructor
|
DBInputSplit(long start,
long end)
Convenience Constructor
|
Modifier and Type | Method and Description |
---|---|
long |
getEnd() |
long |
getLength()
Get the total number of bytes in the data of the
InputSplit . |
String[] |
getLocations()
Get the list of hostnames where the input split is located.
|
long |
getStart() |
void |
readFields(DataInput input)
Deserialize the fields of this object from
in . |
void |
write(DataOutput output)
Serialize the fields of this object to
out . |
public DBInputSplit()
public DBInputSplit(long start, long end)
start
- the index of the first row to selectend
- the index of the last row to selectpublic String[] getLocations() throws IOException
getLocations
in interface InputSplit
InputSplit
is
located as an array of String
s.IOException
public long getStart()
public long getEnd()
public long getLength() throws IOException
InputSplit
InputSplit
.getLength
in interface InputSplit
IOException
public void readFields(DataInput input) throws IOException
in
.
For efficiency, implementations should attempt to re-use storage in the existing object where possible.
readFields
in interface Writable
input
- DataInput
to deseriablize this object from.IOException
public void write(DataOutput output) throws IOException
out
.write
in interface Writable
output
- DataOuput
to serialize this object into.IOException
Copyright © 2010 The Apache Software Foundation