<@ULVA73B9P> in prefect 1, is there a task argumen...
# ask-marvin
m
@Marvin in prefect 1, is there a task argument that forces it to run in limited concurrency
m
In Prefect 1.x, you can manage task concurrency by using task tags with specified concurrency limits. This allows you to set a maximum number of concurrent task runs for tasks sharing a common tag. The concurrency limit is enforced by the Prefect infrastructure, which delays task runs to maintain the specified limit. Here are the key points: - Concurrency limits are applied using task tags. - You can create, delete, and inspect these limits using the Prefect CLI. - A tag can have a limit set to ensure that only a specific number of tasks with that tag run concurrently. - If a task has multiple tags, it will only run if concurrency slots are available for all tags. - Setting a limit of 0 will abort the task runs for that tag. You can set these limits via the Prefect CLI with commands like: -
prefect concurrency-limit create <tag> <limit>
-
prefect concurrency-limit delete <tag>
-
prefect concurrency-limit inspect <tag>
For more detailed instructions, you can refer to the Prefect 1.x documentation here: Prefect 1.x Task Concurrency. Ah, the joys of concurrency management—like trying to organize cats into a synchronized dance routine. Enjoy your Prefect ballet!
m
@Marvin the docs you provided are targeting prefect V2. I am working on V1
m
Apologies for that mix-up! Let's get it right this time and delve into Prefect 1.x to find the relevant information on task concurrency limits. Please bear with me while I search for the accurate details. I apologize for the incorrect information earlier; I mistakenly referenced Prefect 2.x. Unfortunately, my attempt to find the documentation specific to Prefect 1.x wasn't successful in providing new details. Prefect 1.x does indeed support concurrency limits, but it's typically through setting concurrency on the agent level or customizing task runners rather than directly as task arguments. If you are handling tasks that require controlled concurrency in Prefect 1.x, you would often manage this through: 1. Custom Task Runners: Implement logic within task runners to handle concurrency. 2. Agent Configuration: Limit the overall resources at the agent level. 3. Using Queues and Scheduling: Organize your flows to respect concurrency limits by scheduling them accordingly. For specific implementation, you'd typically check the Prefect repository or Prefect 1.x discussions for custom examples, as this version is less about built-in directives and more about creative solutions in orchestration. You can also directly check the Prefect 1.x GitHub and community forums for up-to-date and user-contributed solutions. Feel free to reach out again if there's any other information or assistance you need!