How to delete all data from an index without deleting the index?

[kovacsbv]

Hello,

I am looking for a simple and efficient way to delete all data from an index without deleting the index. This is known as a truncate in SQL parlance.

The rationale is that I want to clear the data while leaving typing and permissions intact. Both typing and permissions are complicated and it's not something I want to do repeatedly anyway.

This posting asks the same question and goes like this: "You can use delete by query, but it's seriously inefficient." "What if I don't care that it's inefficient?" "Why not just delete it and repopulate?"

So I open a feature request which gets summarily closed with "use delete by query". This is a fundamental feature which deserves a good answer.

[Christian_Dahlqvist]

Create an index template with settings and mappings. You Dan the delete the index and be sure it is recreated with correct mappings when it is recreated. This s the closest to a truncate you will get.

[warkolm (Mark Walkom)]

Welcome to our community!

@kovacsbv

I am looking for a simple and efficient way to delete all data from an index without deleting the index. This is known as a truncate in SQL parlance.

As you've seen, having it both of these is not possible in Elasticsearch, it's just the way that it works.

Your best option is to follow Christian's suggestions.