> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cloud.cdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HDFS

export const title_2 = "HDFS";

export const title_1 = "HDFS";

export const title_0 = "HDFS";

## Setup Guide

Follow these steps to connect HDFS to your Connect AI account:

<Steps>
  <Step>
    Open the **Sources** page of the Connect AI navigation menu.
  </Step>

  <Step>
    Click **+ Add Connection** in the upper-right corner.
  </Step>

  <Step>
    Type *HDFS* into the search field, then click the data source name.
  </Step>

  <Step>
    On the **Basic Settings** tab of the new connection, enter a connection name or keep the default name.
  </Step>

  <Step>
    Enter the **Host**, which specifies the host of your HDFS installation.
  </Step>

  <Step>
    Enter the **Port** of your HDFS installation. The default is 9870.
  </Step>

  <Step>
    (Optional) Enter the **Path**, which specifies the HDFS path used as the working directory.
  </Step>

  <Step>
    Select the **Auth Scheme** used for authentication, then proceed to the relevant section below.
  </Step>
</Steps>

## Authentication

<Tabs>
  <Tab title="None">
    <Steps>
      <Step>
        (Optional) Enter the **User**, which is the user name used to log in to the HDFS server.
      </Step>

      <Step>
        At the top of the Connect AI **Add {title_0} Connection** page, click **Save & Test**.

        * If the connection test succeeds, a **Connection successfully saved** message appears, indicating that your connection has been created. The **Status** on the **Edit Connection** page also changes to **Authenticated**. View the data model of your successful connection in the right pane of the **Edit Connection** page, in the **Data Model** tab.
        * If the connection test fails, ensure that you entered your login information correctly with no stray spaces or other characters. Connect AI displays error messages under the required fields with missing data. Some data sources require that you sign in directly to the source website. If you did not, an error message appears under the **Sign in** button. Correct the errors and try again.
        * Unsuccessful connections are saved as drafts and have a **Status** of **Not Authenticated**. You can return to the connection and authenticate it later.
      </Step>
    </Steps>
  </Tab>

  <Tab title="Negotiate">
    <Steps>
      <Step>
        (Optional) Enter the **User**, which is the user name used to log in to the HDFS server.
      </Step>

      <Step>
        (Optional) Enter the **Password** used to authenticate to the HDFS server. This is only used when Kerberos authentication is selected.
      </Step>

      <Step>
        At the top of the Connect AI **Add {title_1} Connection** page, click **Save & Test**.

        * If the connection test succeeds, a **Connection successfully saved** message appears, indicating that your connection has been created. The **Status** on the **Edit Connection** page also changes to **Authenticated**. View the data model of your successful connection in the right pane of the **Edit Connection** page, in the **Data Model** tab.
        * If the connection test fails, ensure that you entered your login information correctly with no stray spaces or other characters. Connect AI displays error messages under the required fields with missing data. Some data sources require that you sign in directly to the source website. If you did not, an error message appears under the **Sign in** button. Correct the errors and try again.
        * Unsuccessful connections are saved as drafts and have a **Status** of **Not Authenticated**. You can return to the connection and authenticate it later.
      </Step>
    </Steps>
  </Tab>

  <Tab title="Token">
    <Steps>
      <Step>
        Enter the **Access Token**, which is the HDFS access token.
      </Step>

      <Step>
        At the top of the Connect AI **Add {title_2} Connection** page, click **Save & Test**.

        * If the connection test succeeds, a **Connection successfully saved** message appears, indicating that your connection has been created. The **Status** on the **Edit Connection** page also changes to **Authenticated**. View the data model of your successful connection in the right pane of the **Edit Connection** page, in the **Data Model** tab.
        * If the connection test fails, ensure that you entered your login information correctly with no stray spaces or other characters. Connect AI displays error messages under the required fields with missing data. Some data sources require that you sign in directly to the source website. If you did not, an error message appears under the **Sign in** button. Correct the errors and try again.
        * Unsuccessful connections are saved as drafts and have a **Status** of **Not Authenticated**. You can return to the connection and authenticate it later.
      </Step>
    </Steps>
  </Tab>
</Tabs>

## More Information

For more information about interactions between Connect AI and HDFS, see [this information page](https://cdn.cdata.com/help/GWM/cloud/default.htm#default).