elasticsearchHow can I clear an elasticsearch index?

To clear an Elasticsearch index, use the DELETE request to delete the index.
```
DELETE /<index_name>
```
This will delete the index and all of its documents.
To delete all the documents in the index without deleting the index itself, use the DELETE request with the _doc endpoint.
```
DELETE /<index_name>/_doc
```
This will delete all documents in the index but the index itself will remain.
To delete documents that match a certain criteria, use the DELETE request with the _delete_by_query endpoint.
```
DELETE /<index_name>/_delete_by_query
{
    "query": {
        "match": {
            "field_name": "field_value"
        }
    }
}
```
This will delete all documents that match the query criteria, but the index itself will remain.
To delete documents in bulk, use the DELETE request with the _bulk endpoint.
```
DELETE /<index_name>/_bulk
{ "delete" : { "_id" : "1" } }
{ "delete" : { "_id" : "2" } }
{ "delete" : { "_id" : "3" } }
```
This will delete the specified documents in bulk, but the index itself will remain.
To delete all documents in an index and recreate the index, use the DELETE request with the _all endpoint.
```
DELETE /_all
```
This will delete all documents in the index and recreate the index.
To delete an index, use the DELETE request to delete the index.
```
DELETE /<index_name>
```
This will delete the index and all of its documents.
To delete an index permanently, use the DELETE request with the _force endpoint.
```
DELETE /<index_name>/_force
```
This will delete the index and all of its documents permanently, and the index cannot be recovered.

Relevant Links

Edit this code on GitHub

More of Elasticsearch

See more codes...