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Editorial Team
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Asked: 2026-06-16T01:51:01+00:00

I am using elasticsearch and accessing it from C# through the NEST driver. I

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I am using elasticsearch and accessing it from C# through the NEST driver. I need to do some concurrency control on the documents I am adding and updating through the NEST driver. Here is a link to the corresponding elasticsearch feature, but I am unable to find any information on how to use document versioning with the NEST driver.

I attempted to set up a mapping, hoping the “_version” property would deserialize from the indexed document (without serializing), but no luck.

Has anyone been able to do what I am trying to do? Is this even possible?

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  1. Editorial Team

    _version is a meta data attribute that you can access using result.DocumentsWithMetaData this exposes an IEnumerable<Hit<YourDto>> and Hit<YourDto>> has a .Version property.

    Elasticsearch will automatically increase the version number if none is specified.

    You can specify your own expected version when you index see the tests here:
    https://github.com/Mpdreamz/NEST/blob/master/src/Nest.Tests.Unit/Core/Versioning/VersioningTests.cs

    From the ES docs i have not been able to find a mention on how to specify the expected version on the GET and Script Update API. Will have to dive in deeper to be absolutely sure it’s not needed there.

    The op_type create mentioned on http://www.elasticsearch.org/blog/2011/02/08/versioning.html is not supported, will also get that in for the next release.

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