【英文】为Hadoop配置Java环境

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Preface

In general, the Java environment only needs to be configured in the system environment variables. In order to prevent errors, you can manually specify the Java environment in the Hadoop startup script.

Copy environment variables

  • Copy the JAVA_HOME in the environment variables
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echo $JAVA_HOME

Modify configuration

  • Edit the configuration
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vim hadoop/etc/hadoop/hadoop-env.sh
  • Modify line 25 of the hadoop-env.sh configuration file
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export JAVA_HOME=/home/app/jdk1.8.0_65

Done