Title: Setting up dolphinscheduler with yarn - A Step-by-Step Guide

Introduction: In this article, I will guide you on how to set up dolphinscheduler and connect it with yarn. As an experienced developer, I understand the challenges faced by beginners, and I am here to help you overcome them. We will go through the entire process, step by step, including the necessary code snippets and explanations. Let's get started!

Flowchart of the Process:

flowchart TD
    Start --> Step1
    Step1 --> Step2
    Step2 --> Step3
    Step3 --> Step4
    Step4 --> End

Step 1: Install dolphinscheduler: The first step is to install dolphinscheduler. Follow these instructions to install it on your system:

  1. Download the dolphinscheduler package from the official website.
  2. Extract the package to the desired directory using the following command:
    tar -zxvf dolphinscheduler-x.x.x.tar.gz
    Replace 'x.x.x' with the version number you downloaded.

Step 2: Configure hdfs-site.xml: To connect dolphinscheduler with yarn, you need to configure the hdfs-site.xml file. Follow these steps:

  1. Navigate to the 'conf' directory under the dolphinscheduler installation directory.
  2. Open the hdfs-site.xml file using a text editor.
  3. Add the following properties to the file:
    <property>
    <name>dfs.client.use.datanode.hostname</name>
    <value>true</value>
</property>
<property>
    <name>dfs.datanode.use.datanode.hostname</name>
    <value>true</value>
</property>
  4. Save the changes and close the file.

Step 3: Configure yarn-site.xml: Similar to hdfs-site.xml, you also need to configure the yarn-site.xml file. Follow these steps:

  1. Navigate to the 'conf' directory under the dolphinscheduler installation directory.
  2. Open the yarn-site.xml file using a text editor.
  3. Add the following properties to the file:
    <property>
    <name>yarn.scheduler.maximum-allocation-mb</name>
    <value>8192</value>
</property>
<property>
    <name>yarn.scheduler.minimum-allocation-mb</name>
    <value>1024</value>
</property>
  4. Save the changes and close the file.

Step 4: Start dolphinscheduler: Now that you have configured the necessary files, you can start dolphinscheduler. Follow these steps:

  1. Navigate to the 'bin' directory under the dolphinscheduler installation directory.
  2. Execute the following command to start dolphinscheduler:
    ./start-all.sh
    This command will start all the required services for dolphinscheduler.

Congratulations! You have successfully connected dolphinscheduler with yarn. Now you can use dolphinscheduler to manage and schedule your jobs efficiently.

To summarize, here are the steps we covered:

Step Description
Step 1: Install dolphinscheduler Download and extract the dolphinscheduler package.
Step 2: Configure hdfs-site.xml Add properties to enable datanode hostname usage.
Step 3: Configure yarn-site.xml Add properties to specify resource allocation limits.
Step 4: Start dolphinscheduler Start dolphinscheduler using the provided script.

I hope this guide was helpful in setting up dolphinscheduler with yarn. Feel free to explore the various features of dolphinscheduler and unleash its power to manage your job scheduling efficiently.

Happy coding!