Airflow task group github

Using task groups allows you to: Organize complicated DAGs, visually grouping tasks that belong together in the Airflow UI Grid View. I managed to find all the information I want except TaskGroup id. expand(value=task_1). This is an optional type of configuration and consists of numerous different settings that can help users customize the way they execute dbt projects on Airflow. There are then a couple ways to get at the individual objects: Use the get_task_group_dict() method. Airflow's ExternalTaskSensor can be used to monitor a task of another dag and establish a dependency on it. 4 What happened n the graph view of the dag, after clearing the task (and its downstream tasks) in a task group and refreshing the page the browser the task group becomes disconnected from the dag. 3 What happened When a task returns a mappable Xcom within a task group, the dynamic task mapping feature (via . e. Use case/motivation. It can be constructed using dbt_airflow. However, by default it will. """ from airflow. 0%. This feature enhances the readability and manageability of complex workflows in the Graph view by reducing clutter and highlighting structure. python import get_current_context @task def re Dec 13, 2020 · Apache Airflow version: 2. View the graph view for the above dags file. Feb 11, 2022 · You signed in with another tab or window. I searched it in task instance documentation, my airflow meta database tables and experimented with printing different parts of context to log. Successfully merging a pull request may close this issue. example_task_group. Sep 29, 2023 · It seems the issue is with Task Group generation, because when I removed them in generation, everything works For task generation I used: a. 7. First: TaskGroup does not show the tooltip that is defined for that group on hover. 1 participant. Note. Use case/motivation When tooltips have a lot of words in them, and your computer monitor Mar 2, 2022 · Answered by josh-fell on Mar 2, 2022. In the DAG below I define a simple task group that will have one failing and one successful task, as a result the task group is marked as failed. Use case/motivation When tooltips have a lot of words in them, and your compute 151 lines (123 loc) · 5. airflow. On The Fly. The ExternalTaskSensor in Airflow is a powerful feature that allows one DAG to wait for a task or task group to complete in another DAG before proceeding. Versions of Apache Airflow Providers. This is great because it not only makes dags flexible, but also it reduces the workload on the scheduler since the tasks are defined at run time. Second: Providing an Operator with task_group= instead of TaskGroup as context manager ignores that TaskGroup's default_args. Hello! When passing the output of a traditional operator to a task group, the operator is added to the task group. task_group(python_callable: Callable[FParams, FReturn]) → _TaskGroupFactory[FParams, FReturn] Python TaskGroup decorator. If you have an ExternalTaskSensor that uses external_task_group_id to wait on a TaskGroup, and if that TaskGroup contains any skipped tasks, the sensor will be stuck waiting forever despite the UI saying the state of the TaskGroup is successful. Many engineering teams rely on tools like Airflow to help them organize workflows, including ETL processes, reporting pipelines, or machine learning projects. Kubernetes version (if you are using kubernetes) (use kubectl version): Environment: Cloud provider or hardware configuration: OS (e. Operating System. 2. expand should not lead to a airflow. No response Sep 16, 2023 · I was sitting and looking at the formula that calculates ROI for task automation: TIME (spent on a single manual task) x FREQUENCY (of performing task per month) x Hourly Pay X 12 MONTHS = YEARLY… airflow. When working on some custom DAG override logic, I noticed that invoking DAG. Jan 30, 2024 · Apache Airflow version. Pick example_task_group_decorator. Contribute to pmadruga/airflow-dags development by creating an account on GitHub. Dynamic instances which correspond to a valid index in the specified_key succeed, but Sep 1, 2023 · Apache Airflow version 2. 1 What happened I have a short circuit task which is in a task group that is expanded. env. 2 (latest released) Operating System. 19. Apply default_args to sets of tasks, instead of at the DAG level using DAG parameters. _task_group = dag. upstream_task_ids assert Feb 4, 2022 · initiate SubDag with parameter retries=10. Contribute to yuqian90/task_group_tree development by creating an account on GitHub. Jan 18, 2024 · When marking a task as success or fail from the UI (either browse task instances screen or from the grid) causes all tasks of the same task id to be also marked success. When creating a DAG with Task Groups and a Mapped Operator, if the Task Group is passed as argument to Mapped Operator's partial method it is ignored and the operator is not added to the group. py at main · ThomasKat/airflow Sep 26, 2022 · Note that there are no tasks in the fan_out task group in the two dag, yet a disconnected task group shows up. 2 Apr 11, 2022 · Development. Mar 22, 2021 · for _ in range(10): BashOperator(task_id=f'processing_{_}', bash_command='ls') However, the scenario below fails. If a TaskGroup has no tasks, it should not be shown. # A more realistic use case could be to use an Airflow sensor to represent a source. config. Jul 8, 2021 · Show the duration of the task group in the Airflow UI. potiuk added the good first issue label on Dec 30, 2022. Furthermore, when expanding the task group using this output, the task group is set as upstream of the operator, which causes a cyclic dependency and fails the DAG. on Sep 21, 2023. Pipeline management is crucial for efficient data operations within a company. Scheduler: The Airflow component responsible for monitoring and triggering tasks. CustomTaskSensor inherits the methods of ExternalTaskSensor and overrides the get_count method so that this sensor can be used to Airflow examples taken from https://github. expand) causes the Airflow Scheduler to infinitely loop with a runtime error: Traceback (most rece Apr 24, 2023 · When using expand for a task_group, the mapped instances doesn't show in the "Grid" view (but it is ok in the graph view) What you think should happen instead. from /etc/os-release): Debian Stretch; What happened:. If the fully-collapsed version of the DAG is only task groups, then only the TaskGroup names are in the legend, but when you expand a task group, the Operator names for the newly-visible operators are also displayed in the legend. main (development) What happened. Something like this: Oct 19, 2021 · Just used airflow standalone. toy_taskflow_bash: DAG that shows the @task. short_circuit in that group throws a ForeignKeyViolation Traceback (most recent call last): File "/home/airflow/. exceptions. DbtAirflowConfig and should be supplied via dbt_airflow_config argument in DbtTaskGroup. Other Airflow 2 version (please specify below) What happened. operators. What you think should happen instead. I have a DAG with 4 * 3 000 task that can run in parallel I have grouped them under 4 subdags and it work fine but when I use TaskGroup instead of Subdag the DAG is really slow to display. com/apache/airflow/tree/main/airflow/example_dags - airflow-example-dags/example_task_group. The "Grid" view should show the "[]" close to the task group name, and propose to choose one instance to see logs, in the same way that works for Task with expand. 40/DBU for all-purpose compute, $0. When modifying the trigger rule of a dynamic task mapping to ONE_SUCCESS, the task only creates one task mapped, and not all the N mapped task that it should create. example for configuration). This wraps a function into an Airflow TaskGroup. As like example given below, but here we want number of task groups created based on user input provided (without Nov 30, 2021 · Apache Airflow version. - kedro-airflow-k8s/task_group. 2 Operating System Docker (debian:buster) Versions of Apache Airflow Providers N/A Deployment Astronomer Deployment details run airflow with this dag with DAG( dag_id="label_bug_without_chain" ) as dag: with Ta Jan 15, 2021 · Apache Airflow version: 2. 4 What happened As per the official documentation TaskGroups support the use of default_args argument, but the use results in an import error: Broken DAG: [/home/airflow/ Dec 14, 2020 · Lazy load task in a task group. 1 What happened If we create two nested groups and expand the groups the second group tasks fail. Is used to control the execution of trigger to prevent infinite loop in case if specified name of the dag does not exist in database. Due to concurrency and resource restraints, not all tasks in the group are executed concurrently, starting at different times. Hello folks, I have a use case that doesn't work anymore after the release of the new version 2. Webserver: The Airflow component responsible for rendering the Airflow UI. Aug 4, 2023 · Body task ids not shown in graph. I have a requirement that I need a loop to do several tasks according to the previous task's output. To get a list of tasks that uses the current task for task mapping, use :meth:`iter_mapped_dependants` instead. 5. DAGs have access to the TaskGroup objects within them via the . Use case / motivation. python import task. For subsequent levels: task_group = TaskGroup(, parent_group=parent_task_group, dag=adag) c. partial_subset does not properly update the corresponding _task_group. py, change it so that task_1 returns a list, and call task_2 with . How to reproduce. from /etc/os-release): Kernel (e. "task_groups_example", May 10, 2022 · task. used_group_ids on the returned subset DAG, such that adding back a task which was Clone of https://github. python_operator import ShortCircuitOperator, PythonOperator from airflow. Cloud provider or hardware configuration: Docker container; OS (e. add DummyTask 'C' with trigger_rule="all_success". When used as the @task_group() form, all arguments are forwarded to the underlying TaskGroup class. timetables. decorators. note the tasks are not actually setup / teardown just normal tasks named that way. We call the upstream task the one that is directly preceding the other task. com/apache/airflow/tree/main/airflow/example_dags - airflow_example_dags/example_task_group. example_dags. Using the code I provided below, the task "end" in section_3 has the wrong owner. 3 (latest released) Operating System Linux Versions of Apache Airflow Providers No response Deployment Other Deployment details Have tried env variables as given in this github issue issues/14672: AIRFLOW__CORE Apache Airflow - A platform to programmatically author, schedule, and monitor workflows - apache/airflow Notice that the task_id for the "mapped_classic_task" prepends the TaskGroup group_id of "my_task_group" while the other tasks in the TaskGroup do not. bash decorator. Apache Airflow version 2. You switched accounts on another tab or window. 3. models. Nov 23, 2021 · Apache Airflow version 2. Jan 5, 2022 · Apache Airflow version 2. As the title states, if you have dynamically mapped tasks inside of a TaskGroup, those tasks do not get the group_id prepended to their respective task_ids. The task groups are a nice way to encapsulate multiple tasks. docker/debian. I would like the UI to only load html element for the "main dag" for graph and tree view. I assume the second expand doesn't know which value of mapped index to take. py at main · rapidfort/airflow-example-dags Apache Airflow version. Mar 24, 2023 · @bbovenzi: First of all, it does not show log of child task of a task_group decorator expanded: Secondly, if we are using task_group decorator and expand it, it should have some method to see instance of that expanded task group (like when we using task decorator, it will show mapping task on the right panel), each instance have 1 index position in UI and can click to see detail log. 1 milestone on Dec 30, 2022. Apr 27, 2023 · Apache Airflow version. I encountered a task group behaviour that seems counter-intuitive. However, in the Graph view, the duration of the grouped tasks isn't visible. {"payload":{"allShortcutsEnabled":false,"fileTree":{"airflow/utils":{"items":[{"name":"log","path":"airflow/utils/log","contentType":"directory"},{"name":"__init__. Triggerer: The Airflow component responsible Aug 30, 2022 · Apache Airflow version 2. Running your Databricks notebooks as Databricks Workflows can result in a 75% cost reduction ($0. Breeze. events. UI is looking like a normal task group one even if the dag has mapped task group in it. potiuk added this to the Airflow 2. Here is simple example: from airflow. Airflow is commonly used to process data, but has the opinion that tasks should ideally be idempotent (i. task_group import TaskGroup. 2 participants. The key part of using Tasks is defining how they relate to each other - their dependencies, or as we say in Airflow, their upstream and downstream tasks. For {"payload":{"allShortcutsEnabled":false,"fileTree":{"airflow/example_dags":{"items":[{"name":"libs","path":"airflow/example_dags/libs","contentType":"directory Native support for installing and running dbt in a virtual environment to avoid dependency conflicts with Airflow; Run tests immediately after a model is done to catch issues early; Utilize Airflow's data-aware scheduling to run models immediately after upstream ingestion; Turn each dbt model into a task/task group complete with retries Nov 9, 2023 · Apache Airflow version. EventsTimetable ). :param trigger_start_time: time in Datetime format when the trigger was started. 3 (latest released) What happened. import json import logging import os import subprocess from airflow. Examples of DAGs to be used in Airflow. When attempting to use dynamic task mapping over a task_group() based on a non-standard XCom (e. What happened? When returning multiple outputs from a task and mapping task groups over these values, then the number of expanded tasks is not the number of returned values, but instead the number of returned keys in the dictionary. 0 What happened I have the following DAG: from __future__ import annotations from datetime import datetime from airflow. Python 100. Kedro Plugin to support running pipelines on Kubernetes using Airflow. """ return EmptyOperator (dag = dag, task_group dbt-airflow is a package that builds a layer in-between Apache Airflow and dbt, and enables teams to automatically render their dbt projects in a granular level such that they have full control to individual dbt resource types. When dynamically mapping over a task group containing the S3CopyObjectOperator and using the mapped value within the s3_key or data parameter of the operator; the operator will use the full list of dynamically mapped inputs in every mapped task group instance. What you think should happen instead Mar 13, 2024 · You signed in with another tab or window. task_group. By default, the ExternalTaskSensor will wait for the external task to. But it will work only for dags which are scheduled. Airflow offers rich extensibility, allowing developers to arrange workloads into a sequence of Dynamic tasks enable dag creation based on run time based number of inputs. change flow to A >> B >> C and A >> C. Apache Airflow version. However, the current dynamic tasks run all inputs in parallel (via the expand function). task_group import TaskGroup class DbtDagParser: """ A utility class that parses out a dbt project and creates the respective task groups :param dag: The Airflow DAG :param dbt_global_cli_flags Apache Airflow version 2. . Other. It would be great if we could get the task group options (specifically clearing a task group - (see #26658, #28003). *not* fail if the external task fails, but will continue to check the status. Nov 5, 2022 · with TaskGroup ( "morning_block") as morning_block_tasks : DummyOperator ( task_id="do_stuff_3") And here are some examples of it jumping around. 4 What happened Recently I started to use TaskFlow API in some of my dag files where the tasks are being dynamically generated and started to notice (a lot of) warning me May 24, 2023 · The task work correctly when it returns true but the task fails when it returns false with the following error: sqlalchemy. TaskGroups in Apache Airflow enable users to organize tasks within a DAG into visually distinct, hierarchical groups. 1. streamlit_app: one python file defining a Streamlit app using the data in our pipeline. However, I'm encountering a challenge with the current Airflow features: custom_task_groups: one python file which contains a class instantiating a task group to create a bucket in MinIO if it does not exist already. Add an external task sensor for each task in the group. If i leave the trigger rule to the default ALL_SUCCESS, everything works fine. Here's a deeper look into its usage and common patterns: Mar 17, 2021 · Apache Airflow version: 2. Jul 19, 2022 · Apache Airflow version. Also bear in mind that this will fail a single run of the DAG and will trigger re-runs and will only be declared to be a failed DAG Nov 26, 2022 · I'm using callbacks and context to collect infromation about task state and send it to my monitoring system. n/a May 24, 2021 · Saved searches Use saved searches to filter your results more quickly Apache Airflow version. Deployment. toy_xcom_big_v_small: DAG that pushes a big and a small object to XCom to be used with an ObjectStorage custom XCom backend using a threshold. Run a dag with mapped task group and observe the UI - Apr 24, 2024 · When using expand_kwargs on a task group, arguments of this task group will not get correctly interpreted when using them in classic operators inside this task group. Environment:. Jun 9, 2022 · Apache Airflow version 2. # Cosmos will use this function to generate an empty task when it finds a source node, in the manifest. They will be interpreted as MappedArgument instead of their real values. dummy_operator import DummyOperator from airflow. Debian GNU/Linux. main (development) If "Other Airflow 2 version" selected, which one? No response. 6. It's possible to view the task durations in the Task Duration view, but that isn't as convenient if you want Jul 1, 2023 · You signed in with another tab or window. I also don't want to update material view inside task 'A Feb 28, 2021 · Task Group has no such notion. You need to expand the group to view them. You signed out in another tab or window. MacOS 11. (see . mappedoperator import MappedOperator from airflow. core. decorators import dag, task, task_group from airflow. Versions of Apache Airflow Providers $ pip freeze | grep airflow apache-airflow==2. task_group. The Astro Databricks Provider is an Apache Airflow provider to write Databricks Workflows using Airflow as the authoring interface. Contribute to jasontr/airflow-util-task-group-builder development by creating an account on GitHub. py Mar 11, 2021 · Apache Airflow version: 2. group for the depth first expansion functionality, a @task. This command will spin up 4 Docker containers on your machine, each for a different Airflow component: Postgres: Airflow's Metadata Database. Airflow task groups are a tool to organize tasks into groups within your DAGs. Feb 6, 2023 · Due to the complexity of our DAG, we only use the Graph view to manage it. 0. loc Oct 14, 2021 · A sensor similar to airflow ExternalTaskSensor. task_group import TaskGroup def _walk_group (group: TaskGroup) -> Iterable [tuple [str, DAGNode]]: """Recursively walk children in a task group. Values for `external_task_group_id` and `external_task_id` can't be set at the same time. Add an option to GlueJobOperator to stop the job run when the TI is killed hussein-awala/airflow. However, the last task still executed and the overall DAG is marked successful: with DAG(. It will wait period of time equals _timeout_sec parameter from the time, when the trigger was started Mar 10, 2023 · Apache Airflow version 2. e. No response. task_group property. Apr 16, 2021 · `from airflow import DAG from datetime import datetime from airflow. timedelta. 2. A DAG contains a Task Group with potentially 100s of mapped tasks. Example DAG demonstrating the usage of the TaskGroup. 0rc1. g. I also can't retry whole DAG, because it's big. with DAG(dag_id="leaves_ignored", start_date=pendulum. The difference here is that the task called by the TaskGroup is a decorated function. Add max width to task group tooltips apache/airflow. this task instance, if it goes beyond it will raise and fail. Aug 3, 2023 · Apache Airflow version. But TaskGroup does not have retry parameter. 2 Environment: Cloud provider : Openshift What happened: Once a task in a task group is queued the scheduler throws exeptions like the following one: Note: <dag_name>, <task_group_1 Sometimes there is a need to adjust the status of tasks within a task group, which can get unwieldy depending on the number of tasks in that task group. , results of the task will be the same, and will not create duplicated data in a destination system), and should not pass large quantities of data from one task to the next (though tasks can pass metadata using Airflow's XCom feature). NOT return_value), the group expands to n=len(return_value) instances instead of n=len(specified_key). Kubernetes version (if you are using kubernetes) (use kubectl version): n/a What happened: When I do not use the context manager for the task group and instead call the add function to add the tasks, those tasks show up on the Graph view. The user wants a timeout of 8hrs for the entire task group to complete. and that's it, C marks dag as failed and trigger it to retry. A modification as simple as this will already kill the DAG: Languages. Can be used to parametrize TaskGroup. They can have various inter-dependencies and you cannot do it reliably because even if the tasks are grouped in the UI they might relate to various parts of the tree with some interdependncies between them and there is no clear topological order dbt-airflow configuration. Whereas, in the previous case, we call an operator within the TaskGroup. py at develop · getindata/kedro-airflow-k8s Aug 10, 2023 · I am trying to create airflow task group dynamically based on user input provided. What happened. Dags are scheduled using a timetable ( airflow. A great quality of life upgrade, and something that seems like an intuitive feature, would be the ability to clear or change the status of all tasks at their taskgroup level through the UI. Deployment details. You declare your Tasks first, and then you declare their dependencies second. UI should show the mapped task group details and all the mapped task group attached in it. For first level task group: task_group = TaskGroup(, dag=adag) b. Jun 17, 2022 · I want to use task groups as a reusable blocks in my dags and parametrise it through default_args conf. The default value is 5 sec. :type execution_timeout: datetime. Tasks in a task group might be arbitrary connected or not connected. uname -a): Install tools: Others: What happened: The order of the nodes changes when expanding and collapsing task groups: Before: Nov 16, 2023 · Task Group 1: a >> b >> c Task Group 2: d >> e >> f Task Group 3: g >> h >> i The desired behavior is to have two task groups running in parallel at any given time, with each group executing its tasks in the defined sequence. If you want all of the "get_coupon_info" tasks (assuming this is a task-decorated function using the TaskFlow API) to have a downstream dependency on "select_task", then bring the "select_task" instantiation outside of the loop. DuplicateTaskIdFound inside task groups. Anything else Feb 28, 2022 · Only displaying a legend for what is currently visible in the graph view. N/A. utils. def convert_source (dag: DAG, task_group: TaskGroup, node: DbtNode, ** kwargs): """ Return an instance of a desired operator to represent a dbt "source" node. Add a Dummy task after the TaskGroup which the external task sensor waits on. global_variables: one python file which contains global variables and utility functions. 07/DBU for Jobs compute). Related issues. Reload to refresh your session. Description Improve the readability of task group tooltips by wrapping the text after a certain number of characters. 3 What happened If you hook up a TaskGroup-level dependency before all tasks have been added to the group, the DAG will appear correct on the Graph page, but the dependencies will actually be missing. Member. from airflow. Every dbt model, seed, snapshot or test will have its own Airflow Task so that you can perform any action at a task-level. bash import BashOperator from airflow. Are you willing to submit a PR? Yes I am willing to submit a PR! Code of Conduct Jun 18, 2019 · As per the base operator code comments: :param execution_timeout: max time allowed for the execution of. Dec 6, 2022 · Description. Understanding TaskGroups in Airflow. trigger_rule import TriggerRule initiate SubDag with parameter retries=10. now()): @task def setup1() Apache Airflow - A platform to programmatically author, schedule, and monitor workflows - apache/airflow Demo for TaskGroup Tree View in Airflow 2. Description if you stop a running GlueJobOperator task ( mark fail ) the operator do not call aws glue to stop the runnning task so the airflow task stop but the aws glue job toy_task_duration_page: DAG created to showcase the task duration page. Using the following mapped task group: Aug 17, 2022 · Apache Airflow version 2. 0 Kubernetes version : 1. 4 KB. succeed, at which point it will also succeed. I have done some investigation and found that is related to this PR as I have reverted this locally and run some tests it worked as expected. 1 What happened When using a @task. This sensor is particularly useful in complex workflows where tasks are dependent on the completion of tasks in other workflows. default_args = {'owner': 'airflow', 'retries': 3, 'depends_on_past': False,} def short_circuit (*arg Jun 26, 2023 · Successfully merging a pull request may close this issue. How to reproduce Mar 2, 2021 · TaskGroups provide a great mechanism for authoring DAGs, however there are situations where it might be necessary for a task in an external DAG to wait upon the the completion of the TaskGroup as a whole. get_task_group_dict ()[ "processes" ] previous_tasks = _task_group. ps ua mp rw rs zn gw bw qo rg