maxdoc | highly pluggable , AST-based typesetting engine | Parser library

As I see, this toParquetSingleFile creates a Sink with a Future[Done] as materialized value. But, in your function you are returning via mapMaterializedValue one FileDetails instance. I think that the mapMaterializedValue function that you are using accepts a function of

The code snippet at the end uses pouchDB to demonstrate one way (among a few) to achieve the desired result. This is a very simple solution, but the result is gained from 2 requests rather than 1 request.

To understand how this works check out the Reduce/Rereduce in the CouchDB documentation, particularly regarding rereduce. An in depth write up here would just be a rehash of that documentation.

Here's the design document in the demo snippet.

Try entering en_DE into BLC_LOCALE

There are several changes in these two versions and the main is how score is calculated in ES 1.7(tf/idf) and how it's changed to BM25 in ES6.X.

It also depends on how many shards you have in your index. as the score is calculated is local to shard.

IMO, getting the same score in both these versions, even after a number of primary shards for huge no of documents might be really difficult. what you should aim is checking the order(ie if same document was in top 5 earlier it should still be in top 5 or 10 so) is not changed significantly for same search queries.