Heya. I'm new with Elastic Search and AppSearch but we have setup an engine and am attempting to bulk upload a 100 documents per request and up to 1000 requests, throttled to 10 at a time via a semaphore (c#). I keep on getting the below http exception shortly after initiating the bulk upload (the first couple succeed without issue):
An existing connection was forcibly closed by the remote host.
When I try and view my appsearch engine though, I see that it is unavailable
Increase Enterprise Search and Elasticsearch resource capacity (Elasticsearch matters more after a point)
I'd recommend, starting at 1, increasing concurrent indexing request count to understand when indexing requests begin to affect performance. Then you can increase cluster capacity as needed to achieve your desired indexing throughput.