308: Implement a better parallel indexer r=Kerollmops a=ManyTheFish
Rewrite the indexer:
- enhance memory consumption control
- optimize parallelism using rayon and crossbeam channel
- factorize the different parts and make new DB implementation easier
- optimize and fix prefix databases
Co-authored-by: many <maxime@meilisearch.com>
309: Sort at query time r=Kerollmops a=Kerollmops
This PR:
- Makes the `Asc/Desc` criteria work with strings too, it first returns documents ordered by numbers then by strings, and finally the documents that can't be ordered. Note that it is lexicographically ordered and not ordered by character, which means that it doesn't know about wide and short characters i.e. `a`, `丹`, `▲`.
- Changes the syntax for the `Asc/Desc` criterion by now using a colon to separate the name and the order i.e. `title:asc`, `price:desc`.
- Add the `Sort` criterion at the third position in the ranking rules by default.
- Add the `sort_criteria` method to the `Search` builder struct to let the users define the `Asc/Desc` sortable attributes they want to use at query time. Note that we need to check that the fields are registered in the sortable attributes before performing the search.
- Introduce a new `InvalidSortableAttribute` user error that is raised when the sort criteria declared at query time are not part of the sortable attributes.
- `@ManyTheFish` introduced integration tests for the dynamic Sort criterion.
Fixes#305.
Co-authored-by: Kerollmops <clement@meilisearch.com>
Co-authored-by: many <maxime@meilisearch.com>
283: Use the AlwaysFreePages flag when opening an index r=irevoire a=Kerollmops
We introduced a new flag in our fork of LMDB, this `AlwaysFreePages` flag forces LMDB to always free the single pages it uses before writing to the disk instead of keeping them in a linked list.
Declaring this flag reduces the memory print (leak) we have on memory after indexing a lot of documents.
Fixes#279.
Co-authored-by: Kerollmops <clement@meilisearch.com>
250: Add the limit field to http-ui r=Kerollmops a=irevoire
251: Fix the limit r=Kerollmops a=irevoire
There was no check on the limit and thus if a user specified a very large number this line could cause a panic.
Co-authored-by: Tamo <tamo@meilisearch.com>
