Does Qubole provide any clusters by default?

By default, every Qubole account provides 4 clusters that support Airflow, Spark, Hadoop, and Presto. You will find a default label attached to one of the clusters. Unless you specify a cluster, the REST API queries are directed to the default cluster.

To change the default cluster, drag the default label and drop it in front of the new default cluster (the cluster that you would like to make the default cluster).

For more information, see Clusters.