Archive for 2015
FAQ Hadoop -5
41) What are the different relational operations in “Pig Latin”?
They are:
i. for each
ii..
FAQ Hadoop - 4
31) Explain “Distributed Cache” in a “MapReduce Framework”
“Distributed Cache” is an important.
FAQ - Hadoop - 3
21) What are the features of a “Fully Distributed” mode?
“Fully Distributed” mode is used in.
FAQ Hadoop - 2
11) Why do we use HDFS for applications having large data sets and not when there are a lot of.
FAQ Hadoop - 1
1) List the various Hadoop daemons and their roles in a Hadoop cluster.
Namenode: It is.
How good are a city's farmer's markets?
Input:
Program:
import java.io.IOException;
import java.util.Iterator;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hadoop.mapred.TextOutputFormat;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MapReduceBase;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.Reporter;
public class MarketRating {
public static class MapClass extends MapReduceBase implements
Mapper<LongWritable,.