Some Durable Functions instances stay in Pending state when tested at scale, and scale stops at 7 servers #412
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Needs: Investigation 🔍
A deeper investigation needs to be done by the project maintainers.
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While concurrently running hundreds of identical orchestrations (600 instances in our case) using Azure Durable Functions, a customer has observed that the server failed to scale beyond seven instances and some insteances stay in the Pending state.
Other runs yielded similar results. Here are the results of one of the runs:
Pending orchestrations for Durable Functions should eventually run rather than remain stuck in a pending state, and servers should scale beyond 7.
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