[Transform] Fail requests to start a finished task #106893
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Batch transforms can be started after they have finished. The Indexer will not try to process any additional changes, so the Transform will be stuck in
started
until the stop API is called.Now, the start API will check that the batch transform has not already finished before scheduling the transform to run again. If the transform has already finished, the user will receive a 409 response.
Close #46453