Failed to parse mapping [scheduler]: mapper [cluster] of different type, current_type [keyword], merged_type [ObjectMapper]

[khaoulaari]

Hello everyone i've a problem with creating my index with a specific mapping so while i'm trying to create it with the following command
curl -XPUT http://localhost:9200/inviso-cluster -d @inviso/elasticsearch/mappings/cluster-settings.json

this is my mapping that i upgraded from ES 2.7 to match with ES 5.3

{
    "settings": {
        "index.analysis.analyzer.default.type": "standard",
        "index.mapper.dynamic": "true",
        "index.number_of_replicas": "1",
        "index.number_of_shards": "6",
        "index.mapping.ignore_malformed" : "true"
    },
    "mappings": {
        "_default_": {
            "_all": {
                "enabled": true
            }
        },
        "my_type": {
          "properties": {
            "cluster": {
              "type": "text",
              "fielddata": true,
              "fields": {
                "keyword": {
                  "type": "keyword"
                }
              }
            }
           }
         },
        "applications": {
            "properties": {
                "cluster": {
                    "index": "true",
                    "type": "keyword"
                },
                "cluster.id": {
                    "index": "true",
                    "type": "keyword"
                },
                "id": {
                    "index": "true",
                    "type": "keyword"
                }
            }
          },
        "metrics": {
            "properties": {
                "cluster": {
                    "index": "true",
                    "type": "keyword"
                },
                "cluster.id": {
                    "index": "true",
                    "type": "keyword"
                }
             }
        },
        "scheduler": {
            "properties": {
                "cluster": {
                    "index": "true",
                    "type": "keyword"
                },
                "cluster.id": {
                    "index": "true",
                    "type": "keyword"
                }
            }
        }


    }
}

and i'm getting the following error :

{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"Failed to parse mapping [scheduler]: mapper [cluster] of different type, current_type [keyword], merged_type [ObjectMapper]"}],"type":"mapper_parsing_exception","reason":"Failed to parse mapping [scheduler]: mapper [cluster] of different type, current_type [keyword], merged_type [ObjectMapper]","caused_by":{"type":"illegal_argument_exception","reason":"mapper [cluster] of different type, current_type [keyword], merged_type [ObjectMapper]"}},"status":400}

can anyone help me plz !