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This article mainly shows you "how to configure and start hadoop1.1.2", which is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn how to configure and start hadoop1.1.2.

1. Install jdk and configure environment variables

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Modify / etc/profile

Export JAVA_HOME=/opt/jdk1.6.0_12

Export PATH=$PATH:$JAVA_HOME/bin

Restart

two。 Download hadoop1.1.2

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Modify the configuration file

Hadoop-env.sh

Export JAVA_HOME=/opt/jdk1.6.0_12

Core-site.xml

Fs.default.name

Hdfs://localhost:9000

Hadoop.tmp.dir

/ opt/hadoop-1.1.2/tmp

Hdfs-site.xml

Dfs.replication

one

Mapred-site.xml

Mapred.job.tracker

Localhost:9001

Password-free login

$ssh-keygen-t rsa

$cd $HOME/.ssh

$cp id_rsa.pub authorized_keys

$ssh localhost

Format HDFS:hadoop namenode-format

Start the hadoop cluster: start-all.sh

Uninstall hadoop. Since there are no environment variables, just delete the file.

These are all the contents of the article "how to configure and start hadoop1.1.2". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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