Hadoop install and set up

最新推荐文章于 2024-05-12 21:25:50 发布
最新推荐文章于 2024-05-12 21:25:50 发布
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Hadoop is an open-source software framework used for distributed storage and processing of large datasets across clusters of computers. It is commonly used for big data processing and analytics. To install Hadoop on Ubuntu, you can follow these steps: 1. Update your system packages: ``` sudo apt update ``` 2. Install Java Development Kit (JDK): ``` sudo apt install default-jdk ``` 3. Download the latest stable release of Hadoop from the official website: ``` wget https://downloads.apache.org/hadoop/common/hadoop-x.y.z/hadoop-x.y.z.tar.gz ``` Replace `x.y.z` with the version number you want to install. 4. Extract the downloaded tarball: ``` tar xf hadoop-x.y.z.tar.gz ``` 5. Move the extracted folder to a desired location (e.g., `/opt`): ``` sudo mv hadoop-x.y.z /opt/hadoop ``` 6. Set up environment variables by editing the `~/.bashrc` file: ``` export HADOOP_HOME=/opt/hadoop export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin ``` 7. Reload the `~/.bashrc` file: ``` source ~/.bashrc ``` 8. Configure Hadoop by modifying the necessary configuration files located in `$HADOOP_HOME/etc/hadoop/` directory. The core configuration file is `core-site.xml`, and the HDFS configuration file is `hdfs-site.xml`. 9. Format the Hadoop Distributed File System (HDFS) using the following command: ``` hdfs namenode -format ``` 10. Start the Hadoop daemons: ``` start-dfs.sh start-yarn.sh ``` 11. Verify the installation by accessing the Hadoop web interface at `http://localhost:9870` in your web browser. These steps provide a basic setup of Hadoop on Ubuntu. However, it's important to consult the official Hadoop documentation for detailed configuration and usage instructions.
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