Accessing unindexed fields in script_score

[halaei (Hamid Alaei)]

Does accessing fields that are not indexed in script_score imposes extra time penalty? In other words, should I index all the fields that my script access, even if they are not queried?

Sample part of my schema:
{
    ...
    "likes": {"type": "integer, "indexed": false}
}

A sample script:

return Math.log(doc['likes'].value)

Also I want to know if the time spent in accessing document fields adds up to fetch time or they are part of the query time (which are reported by index/_stats api).

Thanks.

[rjernst (Ryan Ernst)]

A script_score is part of the query time. Accessing fields through doc is as fast as can be done. This is separate from whether the field is indexed, in a separate data structure in Lucene.