Foreach activity not always execute at this number (BatchCount)

Question

I have a foreach activity that 12 items in it. The Batch count is 10.
I find the activity is not always to run 10 parallel jobs.
It means when one job has been finished, anther pending job will not run at once. It seems will wait for several jobs finished.
What is parallel strategy of foreach activity？
If I want always to run full count parallel jobs, how to update?

Answer 1

Hi @Cai Zhang ,

Welcome to Microsoft Q&A platform and thankyou for posting your question here.

As I understand your query, you are trying to execute pipeline within ForEach activity which will have 12 iterations. You want to know how the batch count option in ForEach activity works. Please let me know if my understanding is incorrect.

First of all, if you do not specify any batch count and keep it blank , by default it sets the value to 50. The activity iterates in parallel with a maximum of 50 concurrent iterations. In your case, if you keep it blank , all 12 iterations will start parallelly.

Now coming to the scenario you mentioned, the expectation is that once any of the instance gets completed out of the batch of 10 , it will take one more new iteration in its place and perform the execution. It should not wait for all 10 instances to complete in order to start the new instance.

For more details, kindly check Parallel execution

Hope this will help. Please let us know if any further queries.

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