Field Mapping index false vs true

Elastic Stack Elasticsearch
1

I am using Elastic 6.x...

Is there any reason to not just go with the default of "index" : true for field mappings? There are some fields that I don't believe I will need to perform a search on so my thought is set index to false, but is there any benefit other than just being explicit about what I want searchable vs. not?

Thanks in advance

2

The benefit of setting index to false is that Elasticsearch will not have to build an inverted index for that field when you index documents. As a result, indexing documents is going to be slightly faster. Also, because there will be no inverted index for that field persisted on disk, you will use less disk space.

3 Likes
3

Thanks, very helpful response.

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