New LookML Runtime provides faster LookML validation and content validation, more performant loading of Explores and dashboards, and faster SQL query writing, among other performance improvements.
New LookML Runtime is enabled for all LookML projects by default. To disable New LookML Runtime for a LookML project, add the
new_lookml_runtime: no statement to the project’s manifest file:
If your project does not have a manifest file, you can create one using the Looker IDE.
When New LookML Runtime is enabled for a project, the LookML validator may catch previously overlooked errors. See the Error: Unknown or Inaccessible Field Help Center article for more information on how to resolve these errors.