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  Distributed Hadoop1.2.1 cluster installation
  Add Date : 2018-11-21      
  Installation is very simple, copy the downloaded Hadoop file to the appropriate directory, and then compressed to, the key is first to be installed JDK, pre-configured to Linux.
Now I put my record operating procedure is as follows, for your reference:
HadoopSrv01 log on to the machine, proceed as follows:
 1: su - grid
 2: tar -xvf hadoop-1.2.1-bin.tar.gz
 3: After unpacking, will add a hadoop-1.2.1 directory under / home / grid directory
 4: cd hadoop-1.2.1 Creating tmp directory mkdir tmp
 5: cd conf directory of hadoop-env.sh, core-site.xml, hdfs-site.xml, mapred-site.xml, masters, slaves configuration file
6: Modify hadoop-env.sh file, only you need to set export JAVA_HOME = / usr / java / jdk1.8.0 to the other without modification.
 7: Modify the core-site.xml file, add the following