Help Center> MapReduce Service> Developer Guide (Normal_Earlier Than 3.x)> Impala Application Development> Environment Preparation> Preparing an Environment
Updated on 2022-06-01 GMT+08:00
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Preparing an Environment

  • Install Eclipse and JDK in the Windows development environment.
    The JDK version is 1.8, and the Eclipse version is 4.3.2 or later.
    • If you use IBM JDK, ensure that the JDK configured in Eclipse is IBM JDK.
    • If you use Oracle JDK, ensure that the JDK configured in Eclipse is Oracle JDK.
    • If you use ODBC for secondary development, ensure that JDK 1.8 or later is used.
    • Do not use the same workspace and the sample project in the same path for different Eclipse programs.
  • Prepare a Linux environment for testing application running status.

Preparing a Running and Commissioning Environment

  1. On the ECS management console, apply for a new ECS for user application development, running, and commissioning.

    • The security group of the ECS must be the same as that of the Master node in an MRS cluster.
    • The ECS and the MRS cluster must be in the same VPC.
    • The ECS NIC and the MRS cluster must be in the same network segment.

  2. Apply for an EIP, bind it, and configure an inbound or outbound rule for the security group.
  3. Download a client program.

    1. Log in to MRS Manager.
    2. Choose Services > Download Client to download the complete client to the remote host, that is, download the client program to the newly applied ECS.

  4. Install a cluster client as user root.

    1. Run the following command to decompress the client package:

      tar -xvf /opt/MRS_Services_Client.tar

    2. Run the following command to verify the installation file package:
      sha256sum -c /opt/MRS_Services_ClientConfig.tar.sha256 
      MRS_Services_ClientConfig.tar:OK
    3. Run the following command to decompress the installation file package:

      tar -xvf /opt/MRS_Services_ClientConfig.tar

    4. Run the following command to install the client to a specified directory (absolute path), for example, /opt/client. The directory is automatically created.

      cd /opt/MRS_Services_ClientConfig

      sh install.sh /opt/client

      Components client installation is complete.

  5. Run the following command to update client configurations:

    sh /opt/client/refreshConfig.sh Client installation directory Full path of the client configuration file package

    Example:

    sh /opt/client/refreshConfig.sh /opt/client /opt/MRS_Services_Client.tar

    If you modify component parameter configurations, you need to download the client configuration file again and update the client in the running and commissioning environment.

Parent topic: Environment Preparation