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 |
static org.apache.commons.logging.Log |
LOG
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LOG
public static final org.apache.commons.logging.Log LOG
PartialScanMapper
public PartialScanMapper()
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