com.aliyun.odps.udf

Interface RecordReader

public interface RecordReader

RecordReader converts the byte-oriented view of the input, provided by the InputSplit, and presents a record-oriented Writable (which will usually de-serialized into Record by an implementation of RecordSerDe ). It thus assumes the responsibility of processing record boundaries and presenting the tasks with record Writable

Method Summary

Modifier and Type	Method and Description
void	close()
Writable	createRecord() Create an Writable of the appropriate type to be used as a record.
boolean	next(Writable record) Reads the next record as Writable from the input for processing.

Method Detail

createRecord

Writable createRecord()

Create an Writable of the appropriate type to be used as a record.

Returns:

a new Writable object.

next

boolean next(Writable record)
      throws IOException

Reads the next record as Writable from the input for processing.

Parameters:

record - the Writable to read data into

Returns:

true iff a record was read, false if at EOF

Throws:

IOException

close

void close()
    throws IOException

Throws:

IOException