I'm preparing our migration from ES 2.4.1 to 5.0 and I have a few questions about the results the elasticsearch-migration plugin has given me:
- node.datacenter_location should be rewritten as node.attr.datacenter_location: we have been using node.datacenter_location in cluster.routing.allocation.awareness.attributes: datacenter_location: so if the first one will be changed what do I change the second one to?
- foreground will be moved to the archived namespace on upgrade: what is this parameter? We don't have it in out elasticsearch.yml and I've never seen it before.
- indices.recovery.concurrent_streams will be moved to the archived namespace on upgrade: is there an alternative to this property? It's documented up until 2.x, but it's missing in the 5.0 documentation (https://www.elastic.co/guide/en/elasticsearch/reference/5.0/recovery.html). We have 10 nodes (5 per DC) and if the default is still 3 streams it's very low. It would be great if we could raise the number of concurrent streams, our hardware can handle more streams.