How to Index Json Data using NEST Client for Elastic Search

Question

How Can I index json data using NEST?

If I try to index some data in JSON, it gives me the following error :

MapperParsingException[Malformed content, must start with an object]

I saw we can do this using PlainElastic.Net etc.

Is there a way of doing it in NEST?

Scott Rice · Accepted Answer · 2013-09-10 04:50:09Z

3

Here's how to index a single post in NEST:

var post = new Post() { Id = 12, ... }
var status = client.Index<Post>(post);

Here's how to bulk index many docs:

var descriptor = new BulkDescriptor();
foreach (var i in Enumerable.Range(0, 1000))
    descriptor.Index<ElasticSearchProject>(op => op.Object(new ElasticSearchProject {Id = i}));

var result = this._client.Bulk(descriptor);

In the NEST docs, check out the Index and Bulk sections for more info.

answered Sep 10, 2013 at 4:50

Scott Rice

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1 Comment

Adrian Carr Over a year ago

This works awesome. Just for reference, I tried to both ways on my laptop, with ~67,000 records. Indexing each one individually in a loop took around 35 seconds. Using Bulk with batches of 10,000 took about 7 seconds.

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