Difference between revisions of "CSC352 Notes 2013"

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(Setting up Eclipse for Hadoop)
(Setting up Eclipse for Hadoop)
Line 31: Line 31:
 
****** hello.txt
 
****** hello.txt
 
****** readme.txt
 
****** readme.txt
 +
* make In directory:
 +
 +
hadoop fs -mkdir In
 +
 +
* create a project as explained in http://v-lad.org/Tutorials/Hadoop/23%20-%20create%20the%20project.html
 +
*
  
 
=Notes on doing example in Yahoo Tutorial, Module 2=
 
=Notes on doing example in Yahoo Tutorial, Module 2=

Revision as of 19:03, 15 December 2009

Setting up Eclipse for Hadoop

 start-all.sh
  • setup eclipse
http://v-lad.org/Tutorials/Hadoop/17%20-%20set%20up%20hadoop%20location%20in%20the%20eclipse.html
    • localhost
    • Map/Reduce Master: localhost, 9101
    • DFS Master: user M/R Master ht, localhost, 9000 (must match number in hadoop/conf/hadoop-site.xml for hdfs value, i.e. localhost:9000
    • user name: hadoop-user
    • SOCKS proxy: host, 1080
  • Open DFS Locations
    • localhost
      • (2)
        • tmp(1)
          • hadoop-thiebaut (1)
            • mapred (1)
              • system (0)
        • user(1)
          • thiebaut (2)
            • hello.txt
            • readme.txt
  • make In directory:
hadoop fs -mkdir In

Notes on doing example in Yahoo Tutorial, Module 2

http://developer.yahoo.com/hadoop/tutorial/module2.html

   cd ../hadoop/examples/
   cat > HDFSHelloWorld.java
   mkdir hello_classes
   javac -classpath /Users/thiebaut/hadoop/hadoop-0.19.2-core.jar -d hello_classes HDFSHelloWorld.java 
   emacs HDFSHelloWorld.java -nw
   javac -classpath /Users/thiebaut/hadoop/hadoop-0.19.2-core.jar -d hello_classes HDFSHelloWorld.java 
   ls
   ls hello_classes/
   jar -cvf helloworld.jar -C hello_classes/ .
   ls
   ls -ltr
   find . -name "*" -print
   hadoop jar helloworld.jar HDFSHelloWorld

   Hello, world!