SparkCLI SparkCLI

yaml
type: "io.kestra.plugin.spark.SparkCLI"

Execute Spark CLI commands.

Examples

Submit a PySpark job to a master node.

yaml
id: spark-cli
namespace: dev
tasks:
  - id: workingDirectory
    type: io.kestra.core.tasks.flows.WorkingDirectory
    tasks:
    - id: local-file
      type: io.kestra.core.tasks.storages.LocalFiles
      inputs:
        pi.py: |
          import sys
          from random import random
          from operator import add
          from pyspark.sql import SparkSession


          if __name__ == "__main__":
              spark = SparkSession \
                  .builder \
                  .appName("PythonPi") \
                  .getOrCreate()

              partitions = int(sys.argv[1]) if len(sys.argv) > 1 else 2
              n = 100000 * partitions

              def f(_: int) -> float:
                  x = random() * 2 - 1
                  y = random() * 2 - 1
                  return 1 if x ** 2 + y ** 2 <= 1 else 0

              count = spark.sparkContext.parallelize(range(1, n + 1), partitions).map(f).reduce(add)
              print("Pi is roughly %f" % (4.0 * count / n))

              spark.stop()
    - id: hello
      type: io.kestra.plugin.spark.SparkCLI
      docker:
        networkMode: host
      commands:
        - spark-submit --name Pi --master spark://localhost:7077 pi.py

Properties

commands

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required: ✔️
  • Min items: 1

The list of Spark CLI commands to run.

interpreter

  • Type: array
  • SubType: string
  • Dynamic:
  • Required: ✔️
  • Default: [/bin/sh, -c]
  • Min items: 1

Which interpreter to use.

runner

  • Type: string
  • Dynamic:
  • Required: ✔️
  • Default: DOCKER
  • Possible Values:
    • PROCESS
    • DOCKER

The script runner to use — by default, Kestra runs all scripts in DOCKER.

warningOnStdErr

  • Type: boolean
  • Dynamic:
  • Required: ✔️
  • Default: true

Whether to set the task state to WARNING if any stdErr is emitted.

beforeCommands

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:

A list of commands that will run before the commands, allowing to set up the environment e.g. pip install -r requirements.txt.

docker

Docker options for the DOCKER runner.

env

  • Type: object
  • SubType: string
  • Dynamic: ✔️
  • Required:

Additional environment variables for the current process.

inputFiles

  • Type:
    • object
    • string
  • Dynamic: ✔️
  • Required:

The files to create on the local filesystem. It can be a map or a JSON object.

namespaceFiles

Inject namespace files. Inject namespace files to this task. When enabled, it will, by default, load all namespace files into the working directory. However, you can use the include or exclude properties to limit which namespace files will be injected.

outputFiles

  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:

The files from the local filesystem to send to Kestra's internal storage. Must be a list of glob expressions relative to the current working directory, some examples: my-dir/**, my-dir/*/** or my-dir/my-file.txt.

Outputs

exitCode

  • Type: integer
  • Dynamic:
  • Required: ✔️
  • Default: 0

The exit code of the entire flow execution.

outputFiles

  • Type: object
  • SubType: string
  • Dynamic:
  • Required:

The output files' URIs in Kestra's internal storage.

vars

  • Type: object
  • Dynamic:
  • Required:

The value extracted from the output of the executed commands.

Definitions

io.kestra.core.models.tasks.NamespaceFiles

Properties

enabled
  • Type: boolean
  • Dynamic:
  • Required:
  • Default: true

Whether to enable namespace files to be loaded into the working directory. If explicitly set to true in a task, it will load all Namespace Files into the task's working directory. Note that this property is by default set to true so that you can specify only the include and exclude properties to filter the files to load without having to explicitly set enabled to true.

exclude
  • Type: array
  • SubType: string
  • Dynamic:
  • Required:

A list of filters to exclude matching glob patterns. This allows you to exclude a subset of the Namespace Files from being downloaded at runtime. You can combine this property together with include to only inject a subset of files that you need into the task's working directory.

include
  • Type: array
  • SubType: string
  • Dynamic:
  • Required:

A list of filters to include only matching glob patterns. This allows you to only load a subset of the Namespace Files into the working directory.

io.kestra.plugin.scripts.exec.scripts.models.DockerOptions-DeviceRequest

Properties

capabilities
  • Type: array
  • SubType: array
  • Dynamic:
  • Required:

A list of capabilities; an OR list of AND lists of capabilities.

count
  • Type: integer
  • Dynamic:
  • Required:
deviceIds
  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:
driver
  • Type: string
  • Dynamic: ✔️
  • Required:
options
  • Type: object
  • SubType: string
  • Dynamic:
  • Required:

Driver-specific options, specified as key/value pairs. These options are passed directly to the driver.

io.kestra.plugin.scripts.exec.scripts.models.DockerOptions-Credentials

Properties

auth
  • Type: string
  • Dynamic: ✔️
  • Required:

The registry authentication. The auth field is a base64-encoded authentication string of username:password or a token.

identityToken
  • Type: string
  • Dynamic: ✔️
  • Required:

The identity token.

password
  • Type: string
  • Dynamic: ✔️
  • Required:

The registry password.

registry
  • Type: string
  • Dynamic: ✔️
  • Required:

The registry URL. If not defined, the registry will be extracted from the image name.

registryToken
  • Type: string
  • Dynamic: ✔️
  • Required:

The registry token.

username
  • Type: string
  • Dynamic: ✔️
  • Required:

The registry username.

io.kestra.plugin.scripts.exec.scripts.models.DockerOptions-Memory

Properties

kernelMemory
  • Type: string
  • Dynamic: ✔️
  • Required:

The maximum amount of kernel memory the container can use. The minimum allowed value is 4m. Because kernel memory cannot be swapped out, a container which is starved of kernel memory may block host machine resources, which can have side effects on the host machine and on other containers. See --kernel-memory details.

memory
  • Type: string
  • Dynamic: ✔️
  • Required:

The maximum amount of memory resources the container can use. It is recommended that you set the value to at least 6 megabytes.

memoryReservation
  • Type: string
  • Dynamic: ✔️
  • Required:

Allows you to specify a soft limit smaller than memory which is activated when Docker detects contention or low memory on the host machine. If you use memoryReservation, it must be set lower than memory for it to take precedence. Because it is a soft limit, it does not guarantee that the container doesn’t exceed the limit.

memorySwap
  • Type: string
  • Dynamic: ✔️
  • Required:

The amount of memory this container is allowed to swap to disk. If memory and memorySwap are set to the same value, this prevents containers from using any swap. This is because memorySwap is the amount of combined memory and swap that can be used, while memory is only the amount of physical memory that can be used.

memorySwappiness
  • Type: string
  • Dynamic: ✔️
  • Required:

The amount of memory this container is allowed to swap to disk. By default, the host kernel can swap out a percentage of anonymous pages used by a container. You can set memorySwappiness to a value between 0 and 100, to tune this percentage.

oomKillDisable
  • Type: boolean
  • Dynamic:
  • Required:

By default, if an out-of-memory (OOM) error occurs, the kernel kills processes in a container. To change this behavior, use the oomKillDisable option. Only disable the OOM killer on containers where you have also set the memory option. If the memory flag is not set, the host can run out of memory, and the kernel may need to kill the host system’s processes to free the memory.

io.kestra.plugin.scripts.exec.scripts.models.DockerOptions

Properties

image
  • Type: string
  • Dynamic: ✔️
  • Required: ✔️
  • Min length: 1

Docker image to use.

config
  • Type:
    • string
    • object
  • Dynamic: ✔️
  • Required:

Docker configuration file. Docker configuration file that can set access credentials to private container registries. Usually located in ~/.docker/config.json.

cpu

Limits the CPU usage to a given maximum threshold value. By default, each container’s access to the host machine’s CPU cycles is unlimited. You can set various constraints to limit a given container’s access to the host machine’s CPU cycles.

credentials

Credentials for a private container registry.

deviceRequests

A list of device requests to be sent to device drivers.

entryPoint
  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:

Docker entrypoint to use.

extraHosts
  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:

Extra hostname mappings to the container network interface configuration.

host
  • Type: string
  • Dynamic: ✔️
  • Required:

Docker API URI.

memory

Limits memory usage to a given maximum threshold value. Docker can enforce hard memory limits, which allow the container to use no more than a given amount of user or system memory, or soft limits, which allow the container to use as much memory as it needs unless certain conditions are met, such as when the kernel detects low memory or contention on the host machine. Some of these options have different effects when used alone or when more than one option is set.

networkMode
  • Type: string
  • Dynamic: ✔️
  • Required:

Docker network mode to use e.g. host, none, etc.

pullPolicy
  • Type: object
  • Dynamic:
  • Required:
shmSize
  • Type: string
  • Dynamic: ✔️
  • Required:

Size of /dev/shm in bytes. The size must be greater than 0. If omitted, the system uses 64MB.

user
  • Type: string
  • Dynamic: ✔️
  • Required:

User in the Docker container.

volumes
  • Type: array
  • SubType: string
  • Dynamic: ✔️
  • Required:

List of volumes to mount. Must be a valid mount expression as string, example : /home/user:/app.

Volumes mount are disabled by default for security reasons; you must enable them on server configuration by setting kestra.tasks.scripts.docker.volume-enabled to true.

io.kestra.plugin.scripts.exec.scripts.models.DockerOptions-Cpu

Properties

cpus
  • Type: integer
  • Dynamic:
  • Required:

The maximum amount of CPU resources a container can use. For instance, if the host machine has two CPUs and you set cpus:"1.5", the container is guaranteed at most one and a half of the CPUs.