Delete entire index in ElasticSearch

Question

I'm approaching ElastichSearch with a Java client. I'm trying to delete an entire index. I'm able to delete a single document with the following code:

DeleteResponse response = client.prepareDelete("twitter", "tweet", "1").get();

I would like to delete all documents for a given index in a single instruction. Note that I'm using the version 2.2.

Thanks

EDIT: I've found a similar question but it refers to an old API version. I'm currently working with version 2.2.

The problem is essentially the same, but the API in 2.2 version (the current, that I need) are slightly different — giograno
– giograno, Commented Feb 8, 2016 at 14:14
try using elastic.co/guide/en/elasticsearch/client/java-api/1.3/… — Pandiyan Cool
– Pandiyan Cool, Commented Feb 8, 2016 at 15:16

maximede · Accepted Answer · 2016-02-08 22:34:38Z

8

The easiest way would be to delete your index, then recreate it.

DeleteIndexResponse deleteResponse = client.admin().indices().delete(new DeleteIndexRequest("your-index")).actionGet()

then

client.admin().indices().prepareCreate("your-index").get();

This will work with the 2.2 api

answered Feb 8, 2016 at 22:34

maximede

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1 Comment

Aditya Over a year ago

Do you have any idea on how same could be achieved with Java High Level Rest Client. This works fine with transport client but now it is deprecated by elastic search.

Lukasz Blasiak · Accepted Answer · 2021-11-20 15:35:53Z

Same solution as in maximede's answer but using newer version of RestHighLevelClient (non depreciated):

// delete current index
var deleteRequest = new DeleteIndexRequest("index-name");
client.indices().delete(deleteRequest, RequestOptions.DEFAULT);

// create new one
CreateIndexRequest request = new CreateIndexRequest("index-name");
client.indices().create(request, RequestOptions.DEFAULT);

Please make sure to import from the right package:

org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest
org.elasticsearch.client.indices.CreateIndexRequest;

Works fine with micronaut framework io.micronaut.elasticsearch:micronaut-elasticsearch:4.0.0

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