> For the complete documentation index, see [llms.txt](https://docs.pentaho.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/connecting-to-a-hadoop-cluster-with-the-pdi-client-article/audience-and-prerequisites-connect-to-a-hadoop-cluster-with-the-pdi-client.md). # Audience and prerequisites The audience for this article is ETL developers, data engineers, and data analysts. Before you begin, verify that your Hadoop administrator has set up your user account on the cluster and granted permissions to access the applicable HDFS directories. You need access to your home directory and any other directories required for your tasks. Pentaho ships with a default Apache Hadoop driver already installed. Supported versions of drivers for Amazon EMR and Google Dataproc that you can install on the PDI client must be downloaded from the [Support Portal](https://support.pentaho.com/hc/en-us). You must have a driver for each vendor and version of Hadoop for connecting to each cluster. You must install a driver before it is available for selection when you add a new connection to the cluster. * To install a driver for the PDI client, see [Install a driver for the PDI client](/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/connecting-to-a-hadoop-cluster-with-the-pdi-client-article/install-a-driver-for-the-pdi-client.md). When drivers for new Hadoop versions are released, you can download them from the [Support Portal](https://support.pentaho.com/hc/en-us) and then add them to Pentaho to connect to the new Hadoop distributions. Install these drivers using the procedure specified in the **Install Pentaho Data Integration and Analytics** document. Verify that your Hadoop administrator has configured the Pentaho Server to connect to the Hadoop cluster on your computer. Ask your Hadoop administrator to provide you with a copy of the `site.xml` files from the cluster and the following information: * Distribution and version of the cluster. * IP addresses and port numbers for HDFS, JobTracker, and Zookeeper (if used). * Kerberos and cluster credentials if you are connecting to a secured cluster. * Oozie URL (if used). --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/advanced-topics-pentaho-data-integration-overview/connecting-to-a-hadoop-cluster-with-the-pdi-client-article/audience-and-prerequisites-connect-to-a-hadoop-cluster-with-the-pdi-client.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.