The problem seems to be that we have both a field called stats.something and another field called stats.something.else. I get the above error when I try to submit the second piece of data.
I could replace each dot with an underscore in the keys, but I wonder if there a way to convince ElasticSearch to store both of these fields without changes?
curl --header 'Content-Type: application/json' --request POST --data '{"stats.something": 42}' http://elastic:9200/gabor/doc/
{"_index":"gabor","_type":"doc","_id":"8RKIiHgBRItxhQVCgLCo","_version":1,"result":"created","_shards":{"total":2,"successful":1,"failed":0},"_seq_no":1,"_primary_term":1}
curl --header 'Content-Type: application/json' --request POST --data '{"stats.something.else": 42}' http://elastic:9200/gabor/doc/
{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"Could not dynamically add mapping for field [stats.something.else]. Existing mapping for [stats.something] must be of type object but found [long]."}],"type":"mapper_parsing_exception","reason":"Could not dynamically add mapping for field [stats.something.else]. Existing mapping for [stats.something] must be of type object but found [long]."},"status":400}