elasticsearch index_name with multi_field - elasticsearch

Question

I have 2 separate indexes, each containing a different type
I want to get combined records from both.
The problem is that one type has field 'email', the other has 'work_email'. However I want to treat them as the same thing for sorting purposes.
That is why I try to use index_name in one of the types.
Here are mappings:
Index1:
"mappings": {
"people": {
"properties": {
"work_email": {
"type": "string",
"index_name": "email",
"fields": {
"raw": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
Index2:
"mappings": {
"companies": {
"properties": {
"email": {
"type": "string",
"fields": {
"raw": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
I expect this to work:
GET /index1,index2/people,companies/_search?
{
"sort": [
{
"email.raw": {
"order": "asc"
}
}
]
}
But, I get an error that there is no such field in the 'people' type.
Am I doing something wrong, or is there a better way to achieve what I need?
Here you can find a recreation script that illustrates the problem: https://gist.github.com/pmishev/11375297

Answer 1

There is problem in the way you map the multi field..Check out the below mapping and try to index..You should get the results
"mappings": {
"people": {
"properties": {
"work_email":{
"type": "multi_field",
"fields": {
"work_email":{
"type": "string",
"index_name": "email"
},
"raw":{
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
We should specify the type to multi_field and under the fields we should specify the required fields....

Answer 2

I ended up adding a 'copy_to' property in my mapping:
"mappings": {
"people": {
"properties": {
"work_email": {
"type": "string",
"copy_to": "email",
"fields": {
"raw": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
So now I can address both fields as email.
It's not ideal, as this means that the email field is actually indexed twice, but that was the only thing that worked.