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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2020/12/01 10:17:07 UTC
[GitHub] [airflow] andreaspeters commented on a change in pull request #10977: Reinclude/Add a new Mesos Executor
andreaspeters commented on a change in pull request #10977:
URL: https://github.com/apache/airflow/pull/10977#discussion_r533277946
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File path: airflow/executors/mesos_executor.py
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@@ -0,0 +1,422 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import threading
+from queue import Queue
+from typing import Any, Dict, Optional
+
+from avmesos.client import MesosClient
+
+from airflow.configuration import conf
+from airflow.exceptions import AirflowException
+from airflow.executors.base_executor import BaseExecutor, CommandType
+from airflow.models.taskinstance import TaskInstanceKey
+from airflow.utils.session import provide_session
+from airflow.utils.state import State
+
+DEFAULT_FRAMEWORK_NAME = 'Airflow'
+FRAMEWORK_CONNID_PREFIX = 'mesos_framework_'
+
+
+def get_framework_name():
+ """Get the mesos framework name if its set in airflow.cfg"""
+ if not conf.get('mesos', 'FRAMEWORK_NAME'):
+ return DEFAULT_FRAMEWORK_NAME
+ return conf.get('mesos', 'FRAMEWORK_NAME')
+
+
+# pylint: disable=too-many-nested-blocks
+# pylint: disable=too-many-instance-attributes
+class AirflowMesosScheduler(MesosClient):
+ """
+ Airflow Mesos scheduler implements mesos scheduler interface
+ to schedule airflow tasks on mesos
+ Basically, it schedules a command like
+ 'airflow run <dag_id> <task_instance_id> <start_date> --local -p=<pickle>'
+ to run on a mesos slave
+ """
+
+ # pylint: disable=super-init-not-called
+ def __init__(self, executor, task_queue, result_queue, task_cpu: int = 1, task_mem: int = 256):
+ self.task_queue = task_queue
+ self.result_queue = result_queue
+ self.task_cpu = task_cpu
+ self.task_mem = task_mem
+ self.task_counter = 0
+ self.task_key_map: Dict[str, str] = {}
+ self.log = executor.log
+ self.client = executor.client
+ self.executor = executor
+ self.driver = None
+
+ if not conf.get('mesos', 'DOCKER_IMAGE_SLAVE'):
+ self.log.error("Expecting docker image for mesos executor")
+ raise AirflowException("mesos.slave_docker_image not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_VOLUME_DRIVER'):
+ self.log.error("Expecting docker volume driver for mesos executor")
+ raise AirflowException("mesos.docker_volume_driver not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_VOLUME_DAG_NAME'):
+ self.log.error("Expecting docker volume dag name for mesos executor")
+ raise AirflowException("mesos.docker_volume_dag_name not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_VOLUME_DAG_CONTAINER_PATH'):
+ self.log.error("Expecting docker volume dag container path for mesos executor")
+ raise AirflowException("mesos.docker_volume_dag_container_path not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_VOLUME_LOGS_NAME'):
+ self.log.error("Expecting docker volume logs name for mesos executor")
+ raise AirflowException("mesos.docker_volume_logs_name not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_VOLUME_LOGS_CONTAINER_PATH'):
+ self.log.error("Expecting docker volume logs container path for mesos executor")
+ raise AirflowException("mesos.docker_volume_logs_container_path not provided for mesos executor")
+
+ if not conf.get('mesos', 'DOCKER_SOCK'):
+ self.log.error("Expecting docker sock path for mesos executor")
+ raise AirflowException("mesos.docker_sock not provided for mesos executor")
+
+ self.mesos_slave_docker_image = conf.get('mesos', 'DOCKER_IMAGE_SLAVE').replace('"', '')
+ self.mesos_docker_volume_driver = conf.get('mesos', 'DOCKER_VOLUME_DRIVER').replace('"', '')
+ self.mesos_docker_volume_dag_name = conf.get('mesos', 'DOCKER_VOLUME_DAG_NAME').replace('"', '')
+ self.mesos_docker_volume_dag_container_path = conf.get(
+ 'mesos', 'DOCKER_VOLUME_DAG_CONTAINER_PATH'
+ ).replace('"', '')
+ self.mesos_docker_volume_logs_name = conf.get('mesos', 'DOCKER_VOLUME_LOGS_NAME').replace('"', '')
+ self.mesos_docker_volume_logs_container_path = conf.get(
+ 'mesos', 'DOCKER_VOLUME_LOGS_CONTAINER_PATH'
+ ).replace('"', '')
+ self.mesos_docker_sock = conf.get('mesos', 'DOCKER_SOCK')
+ self.core_sql_alchemy_conn = conf.get('core', 'SQL_ALCHEMY_CONN')
+ self.core_fernet_key = conf.get('core', 'FERNET_KEY')
+
+ def resource_offers(self, offers):
+ """If we got a offer, run a queued task"""
+ self.log.debug('MESOS OFFER')
+ for i, offer in enumerate(offers):
+ if i == 0:
+ self.run_job(offer)
+ offer.decline()
+ i += 1
+
+ def run_job(self, mesos_offer):
+ """Start a queued Airflow task in Mesos"""
+ offer = mesos_offer.get_offer()
+ tasks = []
+ option = {}
+ offer_cpus = 0
+ offer_mem = 0
+ for resource in offer['resources']:
+ if resource['name'] == "cpus":
+ offer_cpus += resource['scalar']['value']
+ elif resource['name'] == "mem":
+ offer_mem += resource['scalar']['value']
+
+ self.log.debug(
+ "Received offer %s with cpus: %s and mem: %s", offer['id']['value'], offer_cpus, offer_mem
+ )
+
+ remaining_cpus = offer_cpus
+ remaining_mem = offer_mem
+
+ while (
+ (not self.task_queue.empty())
+ and remaining_cpus >= self.task_cpu
+ and remaining_mem >= self.task_mem
+ ):
+
+ key, cmd, executor_config = self.task_queue.get()
+ self.log.debug(executor_config)
+ tid = self.task_counter
+ self.task_counter += 1
+ self.task_key_map[str(tid)] = key
+
+ port_begin = 31000 + tid
+ port_end = 31000 + tid
+
+ self.log.debug("Launching task %d using offer %s", tid, offer['id']['value'])
+
+ task = {
+ 'name': "AirflowTask %d" % tid,
+ 'task_id': {'value': str(tid)},
+ 'agent_id': {'value': offer['agent_id']['value']},
+ 'resources': [
+ {'name': 'cpus', 'type': 'SCALAR', 'scalar': {'value': self.task_cpu}},
+ {'name': 'mem', 'type': 'SCALAR', 'scalar': {'value': self.task_mem}},
+ {
+ 'name': 'ports',
+ 'type': 'RANGES',
+ 'ranges': {'range': [{'begin': port_begin, 'end': port_end}]},
+ },
+ ],
+ 'command': {
+ 'shell': 'true',
+ 'environment': {
+ 'variables': [
+ {'name': 'AIRFLOW__CORE__SQL_ALCHEMY_CONN', 'value': self.core_sql_alchemy_conn},
+ {'name': 'AIRFLOW__CORE__FERNET_KEY', 'value': self.core_fernet_key},
+ {'name': 'AIRFLOW__CORE__LOGGING_LEVEL', 'value': 'DEBUG'},
+ ]
+ },
+ 'value': " ".join(cmd),
+ },
+ 'container': {
+ 'type': 'DOCKER',
+ 'volumes': [
+ {
+ 'container_path': self.mesos_docker_volume_dag_container_path,
+ 'mode': 'RO',
+ 'source': {
+ 'type': 'DOCKER_VOLUME',
+ 'docker_volume': {
+ 'driver': self.mesos_docker_volume_driver,
+ 'name': self.mesos_docker_volume_dag_name,
+ },
+ },
+ },
+ {
+ 'container_path': self.mesos_docker_volume_logs_container_path,
+ 'mode': 'RW',
+ 'source': {
+ 'type': 'DOCKER_VOLUME',
+ 'docker_volume': {
+ 'driver': self.mesos_docker_volume_driver,
+ 'name': self.mesos_docker_volume_logs_name,
+ },
+ },
+ },
+ ],
+ 'docker': {
+ 'image': self.mesos_slave_docker_image,
+ 'force_pull_image': 'true',
+ 'privileged': 'true',
+ 'parameters': [
+ {'key': 'volume', 'value': self.mesos_docker_sock + ':/var/run/docker.sock'}
Review comment:
I remove it. :-)
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