New RunLLM response generated: >>>*# Question* Hi community! What is the better way to handle reusable tasks? Background: We recently meet the issue of registering multiple workflows (they share several tasks) and fail to run all of them except the first workflow get registered. 1. We use flytectl register --continueOnError 2. We use {branch_name} + {git_hash} as version 3. For example we register workflow 1 and get the workflow. When register the workflow 2, it will fail at the task level pb since the task name and version appears before.

log: /tmp/_pb_output/132_src.python.flyte.radar_ml.model_workflows.lpm.main.run_experiment_pipeline_1.pb                  | Failed  | Error registering file due to rpc error: code =                                                    |
|                                                                                                                      |         | InvalidArgument desc = task with different structure                                               |
|                                                                                                                      |         | already exists with id resource_type:TASK                                                          |
|                                                                                                                      |         | project:"radar-ml" domain:"adhoc"                                                                  |
|                                                                                                                      |         | name:"src.python.flyte.radar_ml.model_workflows.lpm.main.run_experiment_pipeline"                  |
|                                                                                                                      |         | version:"multi-workflows-e3660b201e6d"

4. Because we use

flytectl register --continueOnError

,the workflow 2 will register successfully but it will reuse the task with the old image from workflow 1. The immediate fix I can think of is: we add timestamp in the version and it becomes {branch_name} + {git_hash} + {timestamp}. This will make sure the task won't conflict. In the long term, does Flyte consider to use workflow + function reference + version as key? # Answer You can handle reusable tasks by using

reference_task

to reference tasks across workflows, avoiding conflicts during registration. This approach allows you to reuse tasks without encountering the "task with different structure" error. To address your immediate issue, adding a timestamp to the version is a practical workaround to ensure unique versions and avoid conflicts. However, this approach may lead to many redundant task versions. For a more sustainable solution, consider the following steps: 1. Reference Tasks: Use

reference_task

to reference existing tasks in new workflows. This avoids re-registering the same task multiple times.