I am using high level NEST client for C# version 7.6.0.
I want to migrate existing data created in 5.2 to 7.6.0
I understand that I need to migrate to version 6.x (6.8) first.
The only thing I found was this:
var reindexResponse = this.ElasticClient.ReindexOnServer(r => r .Source(s => s .Index(indexName) ) .Destination(d => d .Index(newIndexName) ).Refresh(false) .WaitForCompletion(true) );
How could I do a mapping here? I want to modify the actual data set during reindexing, if possible. Otherwise I would have to do this afterwads.
What part is .Refresh() playing here? How would I tweak this for potentially large data sets?