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Using the Oozie Client

Updated at: Sep 02, 2021 GMT+08:00

Scenario

This section describes how to use the Oozie client in an O&M scenario or service scenario.

Prerequisites

  • The client has been installed. For example, the installation directory is /opt/hadoopclient. The client directory in the following operations is only an example. Change it to the actual installation directory.
  • Service component users are created by the administrator as required. In security mode, machine-machine users need to download the keytab file. A human-machine user must change the password upon the first login.

Using the Oozie Client

  1. Install a client.

  2. Log in to the node where the client is installed as the client installation user.
  3. Run the following command to go to the client installation directory.

    cd /opt/hadoopclient

  4. Run the following command to configure environment variables:

    source bigdata_env

  5. Check the cluster authentication mode.

    • If the cluster is in security mode, run the following command to authenticate the user: exampleUser indicates the name of the user who submits tasks.

      kinit exampleUser

    • If the cluster is in normal mode, go to 6.

  6. Perform the following operations to configure Hue:

    1. Configure the Spark2x environment (skip this step if the Spark2x task is not involved):

      hdfs dfs -put /opt/hadoopclient/Spark2x/spark/jars/*.jar /user/oozie/share/lib/spark2x/

    2. Upload the Oozie configuration file and JAR package to HDFS.

      hdfs dfs -mkdir /user/exampleUser

      hdfs dfs -put -f /opt/hadoopclient/Oozie/oozie-client-5.1.0-hw-ei-310003/examples /user/exampleUser/

      • exampleUser indicates the name of the user who submits tasks.
      • If the user who submits the task and other files except job.properties are not changed, client installation directory /Oozie/oozie-client-5.1.0-hw-ei-310003/examples can be repeatedly used after being uploaded to HDFS.
      • When the JAR package in the HDFS directory /user/oozie/share changes, you need to restart the Oozie service.
      • Resolve the JAR file conflict between Spark and Yarn about Jetty.

        hdfs dfs -rm -f -skipTrash /user/oozie/share/lib/spark/jetty-all-9.2.22.v20170606.jar

      • In normal mode, if Permission denied is displayed during the upload, run the following commands:

        su - omm

        source /opt/hadoopclient/bigdata_env

        hdfs dfs -chmod -R 777 /user/oozie

        exit

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