org.apache.hadoop.hive.ql.io
Class OneNullRowInputFormat
java.lang.Object
org.apache.hadoop.hive.ql.io.OneNullRowInputFormat
- All Implemented Interfaces:
- org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, org.apache.hadoop.mapred.JobConfigurable
public class OneNullRowInputFormat
- extends Object
- implements org.apache.hadoop.mapred.InputFormat<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>, org.apache.hadoop.mapred.JobConfigurable
OneNullRowInputFormat outputs one null row. Used in implementation of
metadata only queries.
Method Summary |
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 |
OneNullRowInputFormat
public OneNullRowInputFormat()
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
Copyright © 2011 The Apache Software Foundation