Adding new field in multifields of a existing field in elasticsearch index

Elastic Stack Elasticsearch
1

Hello,

I am using elasticsearch 6.5.4 version
I have an index ex: testindex ,which has a field title
my index has some data,

I need to add a new analyzer to the index ,and a new field in fields of title

I closed the index

added the analyzer
added the mapping
PUT testindex/type/_mappings
{
"properties": {
"title": {
"type": "text",
"fields": {
"upper":{
"type": "text",
"analyzer" : "my_analyzer"
}
}
}
}

}
opened the index

but when I search with title.upper , I dont get any results ?

does elasticsearch provide any ways to populate the new field of multi_fields(title.upper in this case) to populate automatically from its field (title )

I get the matches for the new documents added after addig the multi field , but dont see matches for existing documents

2

Changes to mappings will only ever apply to new documents. If you have existing documents you will have to reindex those for the changed mappings to apply.

3

Hi @Christian_Dahlqvist

I found the solution for this, we need to run update_by_query on the index so that the new mapping changes gets picked up
works for me now

Thanks
Ivar..

4

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