Elasticsearch: [feature request]smart routing detection when search

[makeyang]

Describe the feature:
if mapping of a index has routing field:
"_routing": {
"path": "XXX",
"required": true
},

when search without explicit set rouing field but has term XXX, ES better detect it and add routing parameters

[clintongormley]

path is no longer supported in _routing, and search by default goes to all shards so routing isn't required. If you want to limit search to specific shards then you need to specify the routing yourself

[makeyang]

you don't get my point at all, do u?

[clintongormley]

No