Semantic Model: kyvos.query.dfs.read

Description:

This property governs the file system to be used to read the cuboids.

Values and behavior:

None: If cuboids are not available on Query Engine's local cache path or NFS cache path then the query will fail.
Cuboid: If cuboids are not available on Query Engine's local cache path and NFS cache path, then they will be read from DFS.

Default Value:

On-Premises: Cuboid

Note

For GCP, to read the data from GFS with the aggregation type set as a ‘Tabular’, you must add the kyvos.gcp.key.id and kyvos.gcp.secret.key properties to the data lake connection.

Cloud: None

Scope:

Semantic Model

Related Property:

Semantic Model: kyvos.cuboid.replication.type: Values of both kyvos.query.dfs.read and kyvos.cuboid.replication.type must not be None.

Comes into effect:

The property comes into effect on the next iteration of the purge thread.

Recommendation:

For cloud deployments, we recommend setting the replication type to LOCAL and kyvos.query.dfs.read as NONE due to limited open connections.

Reading the data from GFS

Note

The values for these properties can be found in GCP > Cloud Storage > Settings > Interoperability > Service Account HMAC Keys.