Tag Cloud not working with nested input

[bferrolartyco (Brian)]

Kibana version: 7.2.0

Hi there!

I'm trying to create a word-cloud visualization (Tag Cloud) in Kibana, using as input a document which has text fields on it. The documents are nested jsons, using one json for each sentence.

The file has this format:

{
  "date": "2019-05-23",
  "results": [
    {
      "text": "Hi Mark, could you please help me with ElasticSearch?",
      "speaker": "spk_0"
    },
    {
      "text": "Yeah, sure! how can I help you?",
      "speaker": "spk_1"
    }
]
}

And the mapping I've used is:

{
  "mappings": {
    "properties": {
      "date": {
        "type": "date",
        "format": "yyyy-MM-dd"
      },
  "results": {
        "type": "nested",
        "properties": {
          "text": {
            "type": "text",
            "fielddata": true
          },
          "speaker": {
            "type": "text"
          }
        }
      }

The index seems to work fine but, when I create the Tag Cloud of the field results.text, it returns nothing.

Perhaps I'm not understanding how the visualization works, I'm new with ES and Kibana.

Do I need to do aggregations before viz?
Is the index mapping wrong?

Thank you!

[bhavyarm]

Hello,

Can you try use keyword mapping and see if it works? Mapping def seems to be the problem here:
https://www.elastic.co/guide/en/elasticsearch/reference/current/keyword.html

Thanks,
Bhavya

[bferrolartyco (Brian)]

Hello @bhavyarm ,

I tried using the keyword mapping but it still doesen't work. This is how I mapped it:

    "results": {
            "type": "nested",
            "properties": {
              "text": {
                "type": "keyword"
              },
              "speaker": {
                "type": "text"
              }

Anyway, it is a free text field, should it be keyword?

Thank you

[bhavyarm]

@timroes can I please get some help?

Thanks,
Bhavya

[timroes]

Hi,

Kibana doesn't yet support Nested fields, which you are using in your mapping. Please follow https://github.com/elastic/kibana/issues/1084 for updates on nested field support.

Cheers,
Tim