As you know In elasticsearch 7.x
the max_concurrent_shard_requests concept change from over cluster (default 256) to per node (default 5). we want to use cross cluster search from 7.5 cluster to 6.5 cluster with
max_concurrent_shard_requests=1 and we concern about this limit apply as cluster
max_concurrent_shard_requests limit in 6.5 cluster.
can anyone from elasticsearch team member clarify about this config?