I have just upgraded my cluster from `5.6` to `6.1`. I did a rolling upgrade as the [documentation](https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html) specified. It looks like a setting that I was using isn't available anymore in 6.1. That would've been fine, but now I can't even enable my shard allocation, so now my last node won't join the cluster. Doing something as simple as this:
No matter what setting I try to change I always get this error. Yes, I did set `indices.store.throttle.max_bytes_per_sec` as persistent setting once in 5.x, and I'm OK with having to set it to a new name now, but how can I even remove it? It's not in `elasticsearch.yml`.
I've tried that already. It raises the same error. In fact ANY setting that I try to PUT raises the same error `unknown setting [indices.store.throttle.max_bytes_per_sec] did you mean [indices.recovery.max_bytes_per_sec]?`. I can't seem to find a way to remove it via the APIs.