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. Will any of the delete queries help me achieve this.

Answer 1

By default it's not possible, because right now Lucene doesn't support that. Basically you can only put or remove whole Lucene documents from Lucene indices.

1. Get the first version of your doc
2. remove the field
3. push this new version of your doc

This answer is valid for version < ES 5.