How can i do reindexing in elasticsearch to migrate from elastic search 1.4 to elasticsearch 5 using Nest api 5

Question

I am trying to migrate the data from Elasticsearch 1.4 to Elasticsearch 5 using NEST api 5.I was able to migrate one index from ES 1.4 to ES 5 using curl commands but as i am new to elasticsearch i am not aware of how to do the same using Nest api 5 as there is very less examples available to refer for.

Answer 1

It should be possible to do this using the Reindex from Remote API which is also exposed within NEST as ReindexOnServer().

If you need to do any elaborate querying on the source, you may need to use .Raw() with a query DSL JSON string, depending on whether the query structure in question has breaking changes between 1.4 and 5.