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

java.lang.Object
  extended by MapReduceBase
      extended by 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
static org.apache.commons.logging.Log LOG
           
 
Constructor Summary
PartialScanMapper()
           
 
Method Summary
 void close()
           
 void configure(JobConf job)
           
 void map(Object k, RCFileValueBufferWrapper value,  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(Object k,
                RCFileValueBufferWrapper value,
                 output,
                Reporter reporter)
         throws IOException
Throws:
IOException

close

public void close()
           throws IOException
Throws:
IOException


Copyright © 2012 The Apache Software Foundation