gistfile1.txt

curl -XPUT localhost:9200/test/type1/1 -d '{
    a : [
        { x:1, y:2 },
        { x:2, y:3 }
      ]
}'

curl -XPOST localhost:9200/test/_refresh

curl 'localhost:9200/test/_search?q=*&fields=a.x'

I am getting the below error while passing the curl -XPUT command.

{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"failed to parse"}],"type":"mapper_parsing_exception","reason":"failed to parse","caused_by":{"type":"json_parse_exception","reason":"Unexpected character ('a' (code 97)): was expecting double-quote to start field name\n at [Source: org.elasticsearch.common.bytes.BytesReference$MarkSupportingStreamInputWrapper@13e87de7; line: 2, column: 6]"}},"status":400}

--Raja