Remove a field from a Elasticsearch document

Question

I need to remove a field in all the documents indexed to Elasticsearch. How can I do it?

Answer 1

What @backtrack told is true , but then there is a very convenient way of doing this in Elasticsearch. Elasticsearch will abstract out the internal complexity of the deletion. You need to use update API to achieve this -

curl -XPOST 'localhost:9200/test/type1/1/_update' -d '{
    "script" : "ctx._source.remove("name_of_field")"
}'

You can find more documentation here.

Note: As of Elastic Search 6 you are required to include a content-type header:

-H 'Content-Type: application/json'