Hi, Would there be a way for an activity to trigger multiple async child workflows and also allow the parent workflow to wait for all these child workflows to complete? I know that if I trigger the child workflows directly from the parent workflow - without an activity - I can do something like Pr…

Thanks Maxim for pointing me in that direction - will look that ContinueAsNew approach for the items processing. A few things if you could clarify about the approach: If I open the file in the workflow (not Activity) I’d need to handle any retry logic myself? I’d need to keep track of where the w…

If I open the file in the workflow (not Activity) I’d need to handle any retry logic myself? Any external API calls from workflow are not allowed. Only open files from activities. Correct

Right, I see. I had an attempt to implement this, but realised I’m still a bit unclear. So I’ve now got: parent workflow → ‘iterating’ workflow (calls an activity to read items from file, uses ContinueAsNew) → child workflow (processes each item). These are the 2 possible methods I can see - wonde…

a. Activity reads file and passes all the items back to calling ‘iterating’ workflow. ‘Iterating’ workflow then triggers the child workflows. Ideally, the activity is going to read a chunk of items from the file and pass the offset of the last record to the next iteration of the workflow. This wa…

Waiting for all async child workflows to complete, when triggered from an activity

Community Support

maxim June 16, 2021, 3:05pm 2

In your case, I would use option 2 from this post.

Topic		Replies	Views
Triggering Synchronous and Asynchronous Workflows from a workflow Community Support java-sdk , async	27	13686	September 3, 2021
Perform Batch API calls using workflows Community Support java-sdk	7	1135	July 24, 2023
Temporal Retry Async Activities Community Support java-sdk , retries	3	484	January 22, 2024
Best way to create an async child workflow Community Support child-workflow , async	27	19098	September 18, 2026
Executing asynchronous child workflow and retrieving result later Community Support java-sdk , general-impl , async	2	770	August 3, 2023

Waiting for all async child workflows to complete, when triggered from an activity

Related topics