Create a Cluster

Create a Cluster

Usage

db_cluster_create(
  name,
  spark_version,
  node_type_id,
  num_workers = NULL,
  autoscale = NULL,
  spark_conf = list(),
  cloud_attrs = aws_attributes(),
  driver_node_type_id = NULL,
  custom_tags = list(),
  init_scripts = list(),
  spark_env_vars = list(),
  autotermination_minutes = 120,
  log_conf = NULL,
  ssh_public_keys = NULL,
  driver_instance_pool_id = NULL,
  instance_pool_id = NULL,
  idempotency_token = NULL,
  enable_elastic_disk = TRUE,
  apply_policy_default_values = TRUE,
  enable_local_disk_encryption = TRUE,
  docker_image = NULL,
  policy_id = NULL,
  host = db_host(),
  token = db_token(),
  perform_request = TRUE
)

Arguments

name: Cluster name requested by the user. This doesn’t have to be unique. If not specified at creation, the cluster name will be an empty string.
spark_version: The runtime version of the cluster. You can retrieve a list of available runtime versions by using db_cluster_runtime_versions().
node_type_id: The node type for the worker nodes. db_cluster_list_node_types() can be used to see available node types.
num_workers: Number of worker nodes that this cluster should have. A cluster has one Spark driver and num_workers executors for a total of num_workers + 1 Spark nodes.
autoscale: Instance of cluster_autoscale().
spark_conf: Named list. An object containing a set of optional, user-specified Spark configuration key-value pairs. You can also pass in a string of extra JVM options to the driver and the executors via spark.driver.extraJavaOptions and spark.executor.extraJavaOptions respectively. E.g. list("spark.speculation" = true, "spark.streaming.ui.retainedBatches" = 5).
cloud_attrs: Attributes related to clusters running on specific cloud provider. Defaults to aws_attributes(). Must be one of aws_attributes(), azure_attributes(), gcp_attributes().
driver_node_type_id: The node type of the Spark driver. This field is optional; if unset, the driver node type will be set as the same value as node_type_id defined above. db_cluster_list_node_types() can be used to see available node types.
custom_tags: Named list. An object containing a set of tags for cluster resources. Databricks tags all cluster resources with these tags in addition to default_tags. Databricks allows at most 45 custom tags.
init_scripts: Instance of init_script_info().
spark_env_vars: Named list. User-specified environment variable key-value pairs. In order to specify an additional set of SPARK_DAEMON_JAVA_OPTS, we recommend appending them to $SPARK_DAEMON_JAVA_OPTS as shown in the following example. This ensures that all default Databricks managed environmental variables are included as well. E.g. {"SPARK_DAEMON_JAVA_OPTS": "$SPARK_DAEMON_JAVA_OPTS -Dspark.shuffle.service.enabled=true"}
autotermination_minutes: Automatically terminates the cluster after it is inactive for this time in minutes. If not set, this cluster will not be automatically terminated. If specified, the threshold must be between 10 and 10000 minutes. You can also set this value to 0 to explicitly disable automatic termination. Defaults to 120.
log_conf: Instance of cluster_log_conf().
ssh_public_keys: List. SSH public key contents that will be added to each Spark node in this cluster. The corresponding private keys can be used to login with the user name ubuntu on port 2200. Up to 10 keys can be specified.
driver_instance_pool_id: ID of the instance pool to use for the driver node. You must also specify instance_pool_id. Optional.
instance_pool_id: ID of the instance pool to use for cluster nodes. If driver_instance_pool_id is present, instance_pool_id is used for worker nodes only. Otherwise, it is used for both the driver and worker nodes. Optional.
idempotency_token: An optional token that can be used to guarantee the idempotency of cluster creation requests. If an active cluster with the provided token already exists, the request will not create a new cluster, but it will return the ID of the existing cluster instead. The existence of a cluster with the same token is not checked against terminated clusters. If you specify the idempotency token, upon failure you can retry until the request succeeds. Databricks guarantees that exactly one cluster will be launched with that idempotency token. This token should have at most 64 characters.
enable_elastic_disk: When enabled, this cluster will dynamically acquire additional disk space when its Spark workers are running low on disk space.
apply_policy_default_values: Boolean (Default: TRUE), whether to use policy default values for missing cluster attributes.
enable_local_disk_encryption: Boolean (Default: TRUE), whether encryption of disks locally attached to the cluster is enabled.
docker_image: Instance of docker_image().
policy_id: String, ID of a cluster policy.
host: Databricks workspace URL, defaults to calling db_host().
token: Databricks workspace token, defaults to calling db_token().
perform_request: If TRUE (default) the request is performed, if FALSE the httr2 request is returned without being performed.

Details

Create a new Apache Spark cluster. This method acquires new instances from the cloud provider if necessary. This method is asynchronous; the returned cluster_id can be used to poll the cluster state (db_cluster_get()). When this method returns, the cluster is in a PENDING state. The cluster is usable once it enters a RUNNING state.

Databricks may not be able to acquire some of the requested nodes, due to cloud provider limitations or transient network issues. If Databricks acquires at least 85% of the requested on-demand nodes, cluster creation will succeed. Otherwise the cluster will terminate with an informative error message.

Cannot specify both autoscale and num_workers, must choose one.

Usage

Arguments

Details

See also