Elasticsearch mapping parser exception? - elasticsearch

Question

I'm trying to create a nested document in Elasticsearch.
Structure:
title,name,comments
comments is a nested document - inside that - Comment & Star_Rating.
Inside Comment, name and address.
Here is the query mentioned below.
PUT /sounduu
{
"mappings": {
"blogpost": {
"properties": {
"title": {
"type": "string"
},
"name": {
"type": "string"
},
"comments": {
"properties": {
"comment": {
"properties": {
"name": {
"type": "string"
},
"address": {
"type": "string"
}
}
},
"star_rating": {
"type": "long"
}
}
}
}
}
}
}
PUT /sounduu/blogpost/1
{
"title": "someh_title",
"name":"soundy",
"comments": {
"comment":"kuu",
[{
"name":"juwww",
"address":"eeeey"
},
{
"name":"jj",
"address":oo"
}]
},
"star_rating":6
}
Error :
{
"error": {
"root_cause": [
{
"type": "mapper_parsing_exception",
"reason": "object mapping for [comments.comment] tried to parse field [comment] as object, but found a concrete value"
}
],
"type": "mapper_parsing_exception",
"reason": "object mapping for [comments.comment] tried to parse field [comment] as object, but found a concrete value"
},
"status": 400
}
Can anyone help with this?

Answer 1

In your PUT /sounduu/blogpost/1 request you are attempting to treat the "comment" property as both a nested object and a string.
Formatting your request's JSON, you can observe the issue:
{
"title": "someh_title",
"name": "soundy",
"comments": {
"comment": "kuu",
[{
"name": "juwww",
"address": "eeeey"
},
{
"name": "jj",
"address": oo"
}]
},
"star_rating":6
}
You either need to update your mapping to include a "text" property, and move the "comment": "kuu" content accordingly, or omit it from your request to work with your current mapping.
Example here - For me it seems logical to group everything like so:
PUT /sounduu
{
"mappings": {
"blogpost": {
"properties": {
"title": {
"type": "string"
},
"name": {
"type": "string"
},
"comments": {
"properties": {
"text" : {
"type": "string"
},
"name": {
"type": "string"
},
"address": {
"type": "string"
}
}
},
"star_rating": {
"type": "long"
}
}
}
}
}
The indexing request would then look like:
{
"title": "someh_title",
"name": "soundy",
"comments": [
{
"text": "kuu",
"name": "juwww",
"address": "eeeey"
},
{
"text": "kuu2",
"name": "jj",
"address": oo"
}
],
"star_rating":6
}

Answer 2

If you are using elasticSearch higher version, then it is recommended to replace 'string' data type with 'text'. ElasticSearch community has discarded 'string'.
Reformed request should be :
`PUT /sounduu
{
"mappings": {
"blogpost": {
"properties": {
"title": {
"type": "text"
},
"name": {
"type": "text"
},
"comments": {
"properties": {
"text" : {
"type": "text"
},
"name": {
"type": "text"
},
"address": {
"type": "text"
}
}
},
"star_rating": {
"type": "long"
}
}
}
}
}`