org.apache.hadoop.hive.ql.io.rcfile.stats

Class PartialScanMapper

java.lang.Object

MapReduceBase

org.apache.hadoop.hive.ql.io.rcfile.stats.PartialScanMapper

public class PartialScanMapper
extends MapReduceBase

PartialScanMapper. It reads through block header and aggregates statistics at the end. https://issues.apache.org/jira/browse/HIVE-3958

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Constructor and Description
PartialScanMapper()

Method Summary

Modifier and Type	Method and Description
void	close()
void	configure(JobConf job)
void	map(java.lang.Object k, RCFileValueBufferWrapper value, <any> output, Reporter reporter)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Detail

PartialScanMapper

public PartialScanMapper()

Method Detail

configure

public void configure(JobConf job)

map

public void map(java.lang.Object k,
                RCFileValueBufferWrapper value,
                <any> output,
                Reporter reporter)
         throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException