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c#elasticsearchnest

ElasticSearch C# NEST - How to prevent overwriting a document

When I perform an Index call, is there a way to make the call fail if a document with the same ID already exists?

I see warnings being issued, but the original document is still overwritten.

Solution

  • You can achieve this by using the _create endpoint, or by specifying OpType.Create when indexing the document

    var client = new ElasticClient();

// using OpType.Create
client.Index(new Test { Id = 1, Message = "message 1" }, i => i
    .OpType(OpType.Create)
);

// using _create endpoint
client.Create(new Test { Id = 1, Message = "message 1" });

    If the document already exists, a HTTP 409 Conflict response will be returned. In both cases, you need an ID for the document that you're indexing/creating.