Batch transform done indicator

I am performing a batch transform on my ES index (only transforming for once and not a continuous job). Is there an API or indicator that returns a response once the transformation is done (so that I could then stop the transform job)?

Batch transform auto-stop, so there is no task being leftover after it is done. The only "left-over" beside the transformed data are 2 tiny documents in an internal index.

If you are looking for a callback you can use in code, you can call _stop with wait_for_completion and wait_for_checkpoint being set to true. wait_for_completion will tell it to block and wait_for_checkpoint will tell it to not stop the transform in an intermediate state but let it run until a checkpoint is ready (Batch transforms have just 1 checkpoint).

Just a quick follow up, to set a query parameter for the _stop api, is this how I should do it?

curl -X POST "localhost:9200/_transform/<jobID>/_stop?pretty" -d'
  "query": {
      "wait_for_completion": true,
      "wait_for_checkpoint": true

query parameters go into the URL part:
curl -X POST "localhost:9200/_transform/ecommerce_transform/_stop?wait_for_completion=true&wait_for_checkpoint=true"

(I removed pretty, its not needed)

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