ElasticSearch index exists not working / reliable

Question

I am writing a simple Java wrapper around ElasticSearch\'s admin client. To test it I have a main method that first checks if an index exists (IndicesExistsRequest), if so delet

Answer 1

The skgemini's answer is ok if you want to check if index is available by the actual index name or any of its aliases.

If you however want to check only by the index name, here is how.

public boolean checkIfIndexExists(String index) {

    IndexMetaData indexMetaData = client.admin().cluster()
            .state(Requests.clusterStateRequest())
            .actionGet()
            .getState()
            .getMetaData()
            .index(index);

    return (indexMetaData != null);

}