同步从Elasticsearch删除文档

I am using olivere/elastic to work with elasticsearch in Go. Here is my code:

// (1) delete document 
_, err := e.client.Delete().Index(index).Type("entity").
    Id(id).Do(e.ctx)

if err != nil {
    fmt.Println(err.Error())
}

// (2) get all documents 
result, err := e.client.Search().Index(index).From(1).Size(100).Do(e.ctx)
if err != nil {
    log.Println(err)
}

fmt.Println(result.TotalHits())

// (3) wait
time.Sleep(3 * time.Second)

// (4) get all documents
result, err = e.client.Search().Index(index).From(1).Size(100).Do(e.ctx)
if err != nil {
    log.Println(err)
}

fmt.Println(result.TotalHits())

Here I am:

• delete document
• get all documents from collection
• wait 3 seconds
• get the same documents from collection

Now on the step (2) I get one more document than step (4). Looks like the document is deleted in Elastic with some delay and I am searching the way to delete the document synchronously.

_, err := e.client.Delete().Index(index).Type("entity").
    Id(id).Refresh("true").Do(e.ctx)

Refresh("true")