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This article mainly explains "how to modify the configuration file of hadoop". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to modify the configuration file of hadoop".

Copy the downloaded "hadoop-2.2.0.tar.gz" to the "/ usr/local/hadoop/" directory and extract it:

Modify the system configuration file, modify the ~ / .bashrc file configuration "HADOOP_HOME" and add the bin folder under "HADOOP_HOME" to PATH. After modification, use the source command to make the configuration effective.

Next, create a folder under the hadoop directory as follows:

Next, to modify the hadoop configuration file, first enter the Hadoop 2.2.0 configuration file area:

The first step is to modify the configuration file hadoop-env.sh by adding "JAVA_HOME" to it, as follows:

Specify the "JAVA_HOME" we installed:

The second step is to modify the configuration file yarn-env.sh by adding "JAVA_HOME" to it, as follows:

Specify the "JAVA_HOME" we installed:

The third step is to modify the configuration file mapred-env.sh by adding "JAVA_HOME" to it, as follows:

Specify the "JAVA_HOME" we installed:

Thank you for your reading, the above is the content of "how to modify the configuration file of hadoop", after the study of this article, I believe you have a deeper understanding of how to modify the configuration file of hadoop, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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