Dremio

The Looker dialect testing of Dremio runs against Dremio version 1.4.9 Enterprise Edition.

Encrypting network traffic

It is a best practice to encrypt network traffic between the Looker application and your database. Consider one of the options described on the Enabling secure database access documentation page.

Creating the Looker connection to your database

Follow these steps to create the connection from Looker to your database:

  1. In the Admin section of Looker, select Connections, and then click Add Connection.
  2. Fill out the connection details. The majority of the settings are common to most database dialects. See the Connecting Looker to your database documentation page for information. Some of the settings are described next. Use the default values in all the other fields, or leave them blank.

    • Name: Assign a unique name to the connection. The name is how LookML refers to this connection.
    • Dialect: Select Dremio 11+ or Dremio.

    • Host: Enter the IP address or hostname of the server where Dremio is running.

    • Port: The default port is 31010.

    • Database: The default value is DREMIO.

    • Username: Enter the username that Looker uses to access Dremio.

    • Password: Enter the password that is associated with the username that you entered.

  3. To verify that the connection is successful, click Test. See the Testing database connectivity documentation page for troubleshooting information.

    Looker will run SELECT 1 FROM (VALUES(1)) to verify a basic connection and query test. It will not validate that the user can access any of the Dremio sources or underlying tables.

  4. To save these settings, click Connect.

Debugging

Connect your web browser to dremio_host:9047 on the server. From the SQL Editor, run SELECT 1 FROM (VALUES(1)) to verify that Dremio is installed correctly and that queries are able to execute.

Feature support

For Looker to support some features, your database dialect must also support them.

Dremio supports the following features as of Looker 24.16:

Feature Supported?
Support Level
Supported
Looker (Google Cloud core)
No
Symmetric Aggregates
No
Derived Tables
Yes
Persistent SQL Derived Tables
No
Persistent Native Derived Tables
No
Stable Views
No
Query Killing
Yes
SQL-based Pivots
No
Timezones
Yes
SSL
Yes
Subtotals
No
JDBC Additional Params
Yes
Case Sensitive
Yes
Location Type
Yes
List Type
No
Percentile
No
Distinct Percentile
No
SQL Runner Show Processes
No
SQL Runner Describe Table
Yes
SQL Runner Show Indexes
No
SQL Runner Select 10
Yes
SQL Runner Count
Yes
SQL Explain
No
Oauth Credentials
No
Context Comments
Yes
Connection Pooling
No
HLL Sketches
No
Aggregate Awareness
No
Incremental PDTs
No
Milliseconds
Yes
Microseconds
No
Materialized Views
No
Approximate Count Distinct
No

Dremio 11+ supports the following features as of Looker 24.16:

Feature Supported?
Support Level
Supported
Looker (Google Cloud core)
Yes
Symmetric Aggregates
Yes
Derived Tables
Yes
Persistent SQL Derived Tables
No
Persistent Native Derived Tables
No
Stable Views
No
Query Killing
Yes
SQL-based Pivots
No
Timezones
Yes
SSL
Yes
Subtotals
No
JDBC Additional Params
Yes
Case Sensitive
Yes
Location Type
Yes
List Type
No
Percentile
No
Distinct Percentile
No
SQL Runner Show Processes
No
SQL Runner Describe Table
Yes
SQL Runner Show Indexes
No
SQL Runner Select 10
Yes
SQL Runner Count
Yes
SQL Explain
No
Oauth Credentials
No
Context Comments
Yes
Connection Pooling
No
HLL Sketches
No
Aggregate Awareness
No
Incremental PDTs
No
Milliseconds
Yes
Microseconds
No
Materialized Views
No
Approximate Count Distinct
No

Next steps

After you have completed the database connection, configure authentication options.