---
layout: "guides"
page_title: "Apache Spark Integration - Configuration Properties"
sidebar_current: "guides-spark-configuration"
description: |-
  Comprehensive list of Spark configuration properties.
---

# Spark Configuration Properties

Spark [configuration properties](https://spark.apache.org/docs/latest/configuration.html#available-properties) 
are generally applicable to the Nomad integration. The properties listed below 
 are specific to running Spark on Nomad. Configuration properties can be set by 
 adding `--conf [property]=[value]` to the `spark-submit` command.

- `spark.nomad.authToken` `(string: nil)` - Specifies the secret key of the auth 
token to use when accessing the API. This falls back to the NOMAD_TOKEN environment 
variable. Note that if this configuration setting is set and the cluster deploy 
mode is used, this setting will be propagated to the driver application in the 
job spec. If it is not set and an auth token is taken from the NOMAD_TOKEN 
environment variable, the token will not be propagated to the driver which will 
require the driver to pick up its token from an environment variable.

- `spark.nomad.cluster.expectImmediateScheduling` `(bool: false)` - Specifies 
that `spark-submit` should fail if Nomad is not able to schedule the job 
immediately.

- `spark.nomad.cluster.monitorUntil` `(string: "submitted"`) - Specifies the 
length of time that `spark-submit` should monitor a Spark application in cluster
 mode. When set to `submitted`, `spark-submit` will return as soon as the 
 application has been submitted to the Nomad cluster. When set to `scheduled`, 
 `spark-submit` will return as soon as the Nomad job has been scheduled. When 
 set to `complete`, `spark-submit` will tail the output from the driver process 
 and return when the job has completed.

- `spark.nomad.datacenters` `(string: dynamic)` - Specifies a comma-separated 
list of Nomad datacenters to use. This property defaults to the datacenter of 
the first Nomad server contacted.

- `spark.nomad.docker.email` `(string: nil)` - Specifies the email address to 
use when downloading the Docker image specified by 
[spark.nomad.dockerImage](#spark.nomad.dockerImage). See the 
[Docker driver authentication](https://www.nomadproject.io/docs/drivers/docker.html#authentication) 
docs for more information.

-  `spark.nomad.docker.password` `(string: nil)` - Specifies the password to use
  when downloading the Docker image specified by 
  [spark.nomad.dockerImage](#spark.nomad.dockerImage). See the 
[Docker driver authentication](https://www.nomadproject.io/docs/drivers/docker.html#authentication) 
docs for more information.

- `spark.nomad.docker.serverAddress` `(string: nil)` - Specifies the server 
address (domain/IP without the protocol) to use when downloading the Docker 
image specified by [spark.nomad.dockerImage](#spark.nomad.dockerImage). Docker 
Hub is used by default. See the 
[Docker driver authentication](https://www.nomadproject.io/docs/drivers/docker.html#authentication) 
docs for more information.

- `spark.nomad.docker.username` `(string: nil)` - Specifies the username to use
 when downloading the Docker image specified by 
 [spark.nomad.dockerImage](#spark-nomad-dockerImage). See the 
[Docker driver authentication](https://www.nomadproject.io/docs/drivers/docker.html#authentication) 
docs for more information.

- `spark.nomad.dockerImage` `(string: nil)` - Specifies the `URL` for the 
[Docker image](https://www.nomadproject.io/docs/drivers/docker.html#image) to 
use to run Spark with Nomad's `docker` driver. When not specified, Nomad's 
`exec` driver will be used instead.

- `spark.nomad.driver.cpu` `(string: "1000")` - Specifies the CPU in MHz that 
should be reserved for driver tasks.

- `spark.nomad.driver.logMaxFileSize` `(string: "1m")` - Specifies the maximum 
size by time that Nomad should use for driver task log files.

- `spark.nomad.driver.logMaxFiles` `(string: "5")` - Specifies the number of log
 files that Nomad should keep for driver tasks.

- `spark.nomad.driver.networkMBits` `(string: "1")` - Specifies the network 
bandwidth that Nomad should allocate to driver tasks.

- `spark.nomad.driver.retryAttempts` `(string: "5")` - Specifies the number of 
times that Nomad should retry driver task groups upon failure.

- `spark.nomad.driver.retryDelay` `(string: "15s")` - Specifies the length of 
time that Nomad should wait before retrying driver task groups upon failure.

- `spark.nomad.driver.retryInterval` `(string: "1d")` - Specifies Nomad's retry 
interval for driver task groups.

- `spark.nomad.executor.cpu` `(string: "1000")` - Specifies the CPU in MHz that 
should be reserved for executor tasks.

- `spark.nomad.executor.logMaxFileSize` `(string: "1m")` - Specifies the maximum
 size by time that Nomad should use for executor task log files.

- `spark.nomad.executor.logMaxFiles` `(string: "5")` - Specifies the number of 
log files that Nomad should keep for executor tasks.

- `spark.nomad.executor.networkMBits` `(string: "1")` - Specifies the network 
bandwidth that Nomad should allocate to executor tasks.

- `spark.nomad.executor.retryAttempts` `(string: "5")` - Specifies the number of
 times that Nomad should retry executor task groups upon failure.

- `spark.nomad.executor.retryDelay` `(string: "15s")` - Specifies the length of 
time that Nomad should wait before retrying executor task groups upon failure.

- `spark.nomad.executor.retryInterval` `(string: "1d")` - Specifies Nomad's retry 
interval for executor task groups.

- `spark.nomad.job.template` `(string: nil)` - Specifies the path to a JSON file 
containing a Nomad job to use as a template. This can also be set with 
`spark-submit's --nomad-template` parameter.

- `spark.nomad.namespace` `(string: nil)` - Specifies the namespace to use. This 
falls back first to the NOMAD_NAMESPACE environment variable and then to Nomad's 
default namespace. 

- `spark.nomad.priority` `(string: nil)` - Specifies the priority for the 
Nomad job.

- `spark.nomad.region` `(string: dynamic)` - Specifies the Nomad region to use. 
This property defaults to the region of the first Nomad server contacted.

- `spark.nomad.shuffle.cpu` `(string: "1000")` - Specifies the CPU in MHz that 
should be reserved for shuffle service tasks.

- `spark.nomad.shuffle.logMaxFileSize` `(string: "1m")` - Specifies the maximum
 size by time that Nomad should use for shuffle service task log files..

- `spark.nomad.shuffle.logMaxFiles` `(string: "5")` - Specifies the number of 
log files that Nomad should keep for shuffle service tasks.

- `spark.nomad.shuffle.memory` `(string: "256m")` - Specifies the memory that 
Nomad should allocate for the shuffle service tasks.

- `spark.nomad.shuffle.networkMBits` `(string: "1")` - Specifies the network 
bandwidth that Nomad should allocate to shuffle service tasks.

- `spark.nomad.sparkDistribution` `(string: nil)` - Specifies the location of 
the Spark distribution archive file to use.

- `spark.nomad.tls.caCert` `(string: nil)` - Specifies the path to a `.pem` file
 containing the certificate authority that should be used to validate the Nomad 
 server's TLS certificate.

- `spark.nomad.tls.cert` `(string: nil)` - Specifies the path to a `.pem` file 
containing the TLS certificate to present to the Nomad server.

- `spark.nomad.tls.trustStorePassword` `(string: nil)` - Specifies the path to a
 `.pem` file containing the private key corresponding to the certificate in 
[spark.nomad.tls.cert](#spark-nomad-tls-cert).