---
url: /v6.2/en-us/connecting-solr.md
---
# Connecting to Apache Solr

### Connection Steps

Please follow the steps below to connect to the `Apache Solr` data source.

1. Click "New Data Connection" in the upper right corner of the data connection page.
   ![](/images/data-connection/connection-001.png)

2. Select the `Apache Solr` data source from the list of data source types.
   ![](/images/data-connection/connecting-solr-001.png)

3. Fill in the required parameters for the data source connection as prompted.
   ![](/images/data-connection/connecting-solr-002.png)

   **Connection Configuration Information Description**

   | Field                                         | Description                                                                                  |
   | --------------------------------------------- | -------------------------------------------------------------------------------------------- |
   | Name                                          | The name of the connection. Required and unique within the user.                             |
   | Host Address                                  | The address of the database. If the URL field is filled in, the value in the URL takes precedence. |
   | Port                                          | The port of the database. If the URL field is filled in, the value in the URL takes precedence. |
   | Username                                      | The username for the database.                                                               |
   | Password                                      | The password for the database.                                                               |
   | Max Connections                               | The maximum number of connections in the connection pool.                                    |
   | Zookeeper Address List                        | List of Zookeeper addresses, separated by commas, e.g.: zkServerA:2181,zkServerB:2181        |
   | Prefer to use database comment as dataset title| Choose whether to display the table name or the table comment as the title. When enabled, the title is displayed; when disabled, the table comment is displayed. |
   | URL                                           |                                                                                              |
   | Query Timeout (seconds)                       | Default is 600. If the data volume is large, you can increase the timeout appropriately.      |
   | Only show tables under the specified database/schema | When this option is selected and the database field is not empty, only tables under the specified db are displayed. |

4. After filling in the parameters, click the `Validate` button to get the validation result (this checks the connectivity between HENGSHI SENSE and the configured data connection; you cannot add the connection if validation fails).

5. After validation passes, click `Execute Preset Code` to pop up the preset code for this data source, then click the execute button.

6. Click the `Add` button to add the `Apache Solr` connection.

> \[!CAUTION] Please Note
>
> 1. Parameters marked with \* are required; others are optional.
> 2. When connecting to a data source, you must execute the preset code. Failure to do so may result in certain functions being unavailable during data analysis. In addition, when upgrading from a version prior to 4.4 to 4.4, you need to execute the preset code for existing data connections in the system.