## Crawl Cloudera Impala

URL: https://docs.atlan.com/apps/connectors/database/cloudera-impala/how-tos/crawl-cloudera-impala

> Crawl metadata from Cloudera Impala to catalog databases, tables, views, and columns. Extract query lineage and asset information after configuring user permissions.

Extract metadata from your [Cloudera Impala](https://docs.atlan.com/llms/connectors/cloudera-impala/set-up-cloudera-impala/llms.txt) cluster into Atlan to catalog databases, tables, views, and enable data discovery. After configuring the necessary user permissions, you can establish a connection and crawl Impala to extract lineage and column-level details. Review the [order of operations](https://docs.atlan.com/llms/catalog/connector-capabilities/order-workflows/llms.txt) for metadata enrichment workflows before starting.

## Select the source

To select Cloudera Impala as your source:

1. In your Atlan workspace, click **Connectors** in the left sidebar.
 * If you are using the **Old UI (Classic)**, click **New Workflow** in the top navigation.

2. Click **Marketplace**.

3. Search for **Cloudera Impala Assets** and select it.

4. Click **Install**.

5. Once installation completes, click **Setup Workflow** on the same tile.

## Provide your credentials

To enter your Cloudera Impala credentials:

1. For _Extraction method_, _Direct_ is the default selection.

2. For _Hostname_, enter the host name of your Cloudera Impala coordinator or load balancer.

3. For _Authentication_, select _LDAP_ as the authentication method.

4. For _Username_, enter the LDAP username that has access to Cloudera Impala.

5. For _Password_, enter the password associated with the LDAP username.

6. For _SSL_, keep **Enabled** to connect via a Secure Sockets Layer (SSL) channel or click **Disabled**.

7. Click the **Test Authentication** button to confirm connectivity to Cloudera Impala.

8. Once authentication is successful, navigate to the bottom of the screen and click **Next**.

## Configure the connection

To complete the Cloudera Impala connection configuration:

1. Provide a _Connection Name_ that represents your source environment. For example, you might use values like `production`, `development`, `gold`, or `analytics`.

2. (Optional) To change the users who are able to manage this connection, change the users or groups listed under _Connection Admins_.

 :::warning Careful
 If you do not specify any user or group, no one will be able to manage the connection — not even admins.
 :::

3. Navigate to the bottom of the screen and click **Next** to proceed.

## Configure the crawler

Before running the Cloudera Impala crawler, you can further configure it.

On the _Metadata Filters_ page, you can override the defaults for any of these options:

- To include specific assets in crawling, click **Include Metadata**, and select the assets you want. If you don't select any, all assets will be included by default.
- To exclude specific assets from crawling, click **Exclude Metadata**, and choose the assets you want to omit. If you don't select any, no assets will be excluded.

:::info Did you know?
If an asset appears in both the include and exclude filters, the exclude filter takes precedence.
:::

## Run the crawler

To run the Cloudera Impala crawler, after completing the steps above:

- To run the crawler once, immediately, at the bottom of the screen, click the **Run** button.
- To schedule the crawler to run hourly, daily, weekly, or monthly, at the bottom of the screen, click the **Schedule & Run** button.

Once the crawler has completed running, you will see the assets on Atlan's asset page! 🎉

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