Cannot get Elasticsearch Highlight to work

Question

I am working on a project that involves Elasticsearch. So far I can get most function to work except highlight. I am using Laravel + Elasticsearch official PHP client.

Previously I thought it was a problem of my PHP code, and asked a question here: highlight field missing from Elasticsearch results, PHP

Later when I tried with elasticsearch-head in browser, I still cannot see highlight field in results, so I guess there must be something wrong with either my settings of elasticsearch or the way I indexed the documents.

Here is the query I entered into elasticsearch-head:

{
"query" : {
    "match" : {
        "combined" : "DNA"
    }
},
"highlight": {
    "fields" : {
        "combined" : {}
    }
}
}

And I don't see "highlight" after "_source" in hits returned by elasticsearch.

What might I did wrong here?

Please advise,

Thanks.

Update: I'm running Elasticsearch 2.3.3, on Ubuntu 16.04 LTS desktop, JDK 1.8.

Documentation says "store" in mapping needs to be set true. I did so, and re-indexed a bunch of documents. This didn't fix the problem.

What is your mapping? And please give a one document example... — israelst
– israelst, Commented Jul 17, 2016 at 19:38
I followed the example here: elastic.co/guide/en/elasticsearch/client/php-api/current/… The advanced example with slight customization. Later on as I stated in answer, the problem is really "store" needs to be set true. Something I overlooked at the beginning. — Zhiyong Li
– Zhiyong Li, Commented Jul 18, 2016 at 3:10

Zhiyong Li · Accepted Answer · 2016-07-17 19:56:23Z

-1

OK, after stopping and restarting elasticsearch service, my code started to work as intended. I got "highlight" field in results.

The issue is that I need to set "store" to true. Everything else being equal, including the following line

"store"   =>   true

in mapping ensured "highlight" appear in the results I have. Vice versa.

Not sure why doing this earlier didn't solve my problem.

answered Jul 17, 2016 at 19:56

Zhiyong Li

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1 Comment

Lars C. Magnusson Over a year ago

Where do you add "store" => true ?

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