Elasticsearch : Root mapping definition has unsupported parameter - elasticsearch

Question

I am creating a way to search for words in Thai by Elasticsearch and Kibana. I have a problem with mapping.
PUT test
{
"settings": {
"analysis": {
"analyzer": {
"trigrams": {
"tokenizer": "trigram_tokenizer",
"filter": [
"lowercase"
]
}
},
"tokenizer": {
"trigram_tokenizer": {
"type": "ngram",
"min_ngram": 3,
"max_ngram": 3,
"token_chars": []
}
}
}
},
"mappings": {
"true_name": {
"properties": {
"correct": { "type": "text", "analyzer": "trigrams" }
}
}
}
}
and error like this
{
"error" : {
"root_cause" : [
{
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [true_name : {properties={correct={analyzer=trigrams, type=text}}}]"
}
],
"type" : "mapper_parsing_exception",
"reason" : "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters: [true_name : {properties={correct={analyzer=trigrams, type=text}}}]",
"caused_by" : {
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [true_name : {properties={correct={analyzer=trigrams, type=text}}}]"
}
},
"status" : 400
}

Answer 1

Mapping types are deprecated. Refer to this documentation to know more about the removal of mapping types.
Indices created in Elasticsearch 6.0.0 or later may only contain a
single mapping type. Indices created in 5.x with multiple mapping
types will continue to function as before in Elasticsearch 6.x. Types
will be deprecated in APIs in Elasticsearch 7.0.0, and completely
removed in 8.0.0.
{
"settings": {
"analysis": {
"analyzer": {
"trigrams": {
"tokenizer": "trigram_tokenizer",
"filter": [
"lowercase"
]
}
},
"tokenizer": {
"trigram_tokenizer": {
"type": "ngram",
"min_ngram": 3,
"max_ngram": 3,
"token_chars": []
}
}
}
},
"mappings": { // note this
"properties": {
"correct": {
"type": "text",
"analyzer": "trigrams"
}
}
}
}
If your JSON document is like this:
{
"true_name": {
"correct": "mapping types deprecated"
}
}
Then index mapping will be -
{
"settings": {
"analysis": {
"analyzer": {
"trigrams": {
"tokenizer": "trigram_tokenizer",
"filter": [
"lowercase"
]
}
},
"tokenizer": {
"trigram_tokenizer": {
"type": "ngram",
"min_ngram": 3,
"max_ngram": 3,
"token_chars": []
}
}
}
},
"mappings": {
"properties": { // note this
"true_name": {
"properties": {
"correct": {
"type": "text",
"analyzer": "trigrams"
}
}
}
}
}
}