Source code for airflow.providers.apache.livy.example_dags.example_livy

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"""
This is an example DAG which uses the LivyOperator.
The tasks below trigger the computation of pi on the Spark instance
using the Java and Python executables provided in the example library.
"""
from datetime import datetime

from airflow import DAG
from airflow.providers.apache.livy.operators.livy import LivyOperator

with DAG(
    dag_id='example_livy_operator',
    default_args={'args': [10]},
    schedule_interval='@daily',
    start_date=datetime(2021, 1, 1),
    catchup=False,
) as dag:

    # [START create_livy]
    livy_java_task = LivyOperator(
        task_id='pi_java_task',
        file='/spark-examples.jar',
        num_executors=1,
        conf={
            'spark.shuffle.compress': 'false',
        },
        class_name='org.apache.spark.examples.SparkPi',
    )

    livy_python_task = LivyOperator(task_id='pi_python_task', file='/pi.py', polling_interval=60)

    livy_java_task >> livy_python_task
    # [END create_livy]