org.apache.hadoop.hive.ql.io

Class NullRowsInputFormat

java.lang.Object

org.apache.hadoop.hive.ql.io.NullRowsInputFormat

All Implemented Interfaces:

org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, org.apache.hadoop.mapred.JobConfigurable

Direct Known Subclasses:

OneNullRowInputFormat

public class NullRowsInputFormat
extends Object
implements org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, org.apache.hadoop.mapred.JobConfigurable

NullRowsInputFormat outputs null rows, maximum 100.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NullRowsInputFormat.DummyInputSplit
static class	NullRowsInputFormat.NullRowsRecordReader

Constructor Summary

Constructors

Constructor and Description
NullRowsInputFormat()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(org.apache.hadoop.mapred.JobConf job)
org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>	getRecordReader(org.apache.hadoop.mapred.InputSplit arg0, org.apache.hadoop.mapred.JobConf arg1, org.apache.hadoop.mapred.Reporter arg2)
org.apache.hadoop.mapred.InputSplit[]	getSplits(org.apache.hadoop.mapred.JobConf arg0, int arg1)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullRowsInputFormat

public NullRowsInputFormat()

Method Detail

getRecordReader

public org.apache.hadoop.mapred.RecordReader<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable> getRecordReader(org.apache.hadoop.mapred.InputSplit arg0,
                                                                                                                         org.apache.hadoop.mapred.JobConf arg1,
                                                                                                                         org.apache.hadoop.mapred.Reporter arg2)
                                                                                                                           throws IOException

Specified by:

getRecordReader in interface org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

getSplits

public org.apache.hadoop.mapred.InputSplit[] getSplits(org.apache.hadoop.mapred.JobConf arg0,
                                              int arg1)
                                                throws IOException

Specified by:

getSplits in interface org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

configure

public void configure(org.apache.hadoop.mapred.JobConf job)

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable