Can't get highlight working in 2.3.4

Hello! I am really struggling to get highlight working in ES 2.3.4

  1. I do not have any specific schema (mappings)

  2. I do have minimal data amout, as well my query is the simpliest

  3. This is my "search" bash script which I execute:

    #!/bin/bash

    indexName="idx"
    dataType="data"

    curl -XGET 'http://localhost:9200/'$indexName'/'$dataType'/_search?pretty=true' -d '{
    "query" : {
    "term": {"_all" : "bbb"}
    },
    "highlight" : {
    "fields" : {
    "title": {},
    "content": {}
    }
    }
    }'

    echo "Search completed!"

  4. And below is a result of execution - hits are shown but no highlight field!

What am I doing wrong? should be something easy here...

does not work with "store: true" either

solution:

"require_field_match": false