3819: Remove the `docid_word_positions` database r=Kerollmops a=loiclec
Remove the `docid_word_positions` database, which was only used during deletion operations. In the process, also fixes https://github.com/meilisearch/meilisearch/issues/3816
Co-authored-by: Loïc Lecrenier <loic.lecrenier@icloud.com>
3789: Improve the metrics r=dureuill a=irevoire
# Pull Request
## Related issue
Implements https://github.com/meilisearch/meilisearch/issues/3790
Associated specification: https://github.com/meilisearch/specifications/pull/242
## Be cautious; it's DB-breaking 😱
While reviewing and after merging this PR, be cautious; if you already have a `data.ms` and run meilisearch with this code on it, it won't work because we need to cache a new information on the index stats (that are backed up on disk). You'll get internal errors.
### About the breaking-change label
We only break the API of the metrics route, which does not pose any problem since it's experimental.
## What does this PR do?
- Create a method to get the « facet distribution » of the task queue.
- Prefix all the metrics by `meilisearch_`
- Add the real database size used by meilisearch
- Add metrics on the task queue
- Update the grafana dashboard to these new changes
- Move the dashboard to the `assets` directory
- Provide a new prometheus file to scrape meilisearch easily
Co-authored-by: Tamo <tamo@meilisearch.com>
3788: Use `RoaringBitmap::deserialize_unchecked_from` to reduce the deserialization time r=irevoire a=Kerollmops
This pull request replaces the `RoaringBitmap::deserialize_from` methods with the `deserialize_unchecked_from` to avoid doing too much checks. We know the written bitmaps are valid as we do not disable the checks during the indexation phase.
I did a small test with #3780 and discovered that the deserialization time changed from 32% to 9.46% when using these changes. It seems it was low-hanging fruit hidden behind a leaf.
Co-authored-by: Kerollmops <clement@meilisearch.com>
3803: Bump Swatinem/rust-cache from 2.2.1 to 2.4.0 r=curquiza a=dependabot[bot]
Bumps [Swatinem/rust-cache](https://github.com/Swatinem/rust-cache) from 2.2.1 to 2.4.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/Swatinem/rust-cache/releases">Swatinem/rust-cache's releases</a>.</em></p>
<blockquote>
<h2>v2.4.0</h2>
<ul>
<li>Fix cache key stability.</li>
<li>Use 8 character hash components to reduce the key length, making it more readable.</li>
</ul>
<h2>v2.3.0</h2>
<ul>
<li>Add <code>cache-all-crates</code> option, which enables caching of crates installed by workflows.</li>
<li>Add installed packages to cache key, so changes to workflows that install rust tools are detected and cached properly.</li>
<li>Fix cache restore failures due to upstream bug.</li>
<li>Fix <code>EISDIR</code> error due to globed directories.</li>
<li>Update runtime <code>`@actions/cache</code>,` <code>`@actions/io</code>` and dev <code>typescript</code> dependencies.</li>
<li>Update <code>npm run prepare</code> so it creates distribution files with the right line endings.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md">Swatinem/rust-cache's changelog</a>.</em></p>
<blockquote>
<h2>2.4.0</h2>
<ul>
<li>Fix cache key stability.</li>
<li>Use 8 character hash components to reduce the key length, making it more readable.</li>
</ul>
<h2>2.3.0</h2>
<ul>
<li>Add <code>cache-all-crates</code> option, which enables caching of crates installed by workflows.</li>
<li>Add installed packages to cache key, so changes to workflows that install rust tools are detected and cached properly.</li>
<li>Fix cache restore failures due to upstream bug.</li>
<li>Fix <code>EISDIR</code> error due to globed directories.</li>
<li>Update runtime <code>`@actions/cache</code>,` <code>`@actions/io</code>` and dev <code>typescript</code> dependencies.</li>
<li>Update <code>npm run prepare</code> so it creates distribution files with the right line endings.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="988c164c3d"><code>988c164</code></a> 2.4.0</li>
<li><a href="bb80d0f127"><code>bb80d0f</code></a> chore: use 8 character hash components (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/143">#143</a>)</li>
<li><a href="ad97570a01"><code>ad97570</code></a> fix: cache key stability (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/142">#142</a>)</li>
<li><a href="060bda31e0"><code>060bda3</code></a> 2.3.0</li>
<li><a href="865fd1f6db"><code>865fd1f</code></a> "update dependencies and changelog"</li>
<li><a href="7c7e41ab01"><code>7c7e41a</code></a> chore: changelog v2.3.0 (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/139">#139</a>)</li>
<li><a href="68aeeba167"><code>68aeeba</code></a> chore: use linefix to ensure platform line endings (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/135">#135</a>)</li>
<li><a href="def0926359"><code>def0926</code></a> feat: add option to cache all crates (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/137">#137</a>)</li>
<li><a href="827c240e23"><code>827c240</code></a> fix: cache key dependency on installed packages (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/138">#138</a>)</li>
<li><a href="5e9fae966f"><code>5e9fae9</code></a> fix: cache restore failures (<a href="https://redirect.github.com/Swatinem/rust-cache/issues/136">#136</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/Swatinem/rust-cache/compare/v2.2.1...v2.4.0">compare view</a></li>
</ul>
</details>
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3783: Improve SDK CI to choose the Docker image r=curquiza a=curquiza
The point is to have the following "form" when running the SDK CI manually
`nightly` is the default value if running the CI manually.
<img width="1105" alt="Capture d’écran 2023-05-25 à 12 17 35" src="https://github.com/meilisearch/meilisearch/assets/20380692/87ae7123-efe8-4e7b-a99b-4a40aafa3f79">
Co-authored-by: curquiza <clementine@meilisearch.com>
3792: fix the type of the document deletion by filter tasks r=dureuill a=irevoire
# Pull Request
## Related issue
Fixes https://github.com/meilisearch/meilisearch/issues/3791
## What does this PR do?
- Hide the deleteDocumentByFilter internal type from the users.
Co-authored-by: Tamo <tamo@meilisearch.com>
3786: Consistently use wrapping add to avoid overflow in debug when query s… r=dureuill a=dureuill
# Pull Request
## Related issue
Fixes https://github.com/meilisearch/meilisearch/issues/3785
## What does this PR do?
- Some of the code paths would erroneously use the default addition operator that has the semantics that "overflow is an error, checked at runtime in debug" instead of the intended "overflow is expected" semantics that this code use (this code is using `u16::MAX` as a sentinel). This PR makes it so the wrapping add operator is used everywhere.
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
3781: Revert "Improve docker cache" r=Kerollmops a=curquiza
Reverts meilisearch/meilisearch#3566 because does not work as expected, and so I want to remove useless complexity from the CI and Dockerfile
Co-authored-by: Clémentine U. - curqui <clementine@meilisearch.com>
3779: Add a cron test with disabled tokenization (with @roy9495) r=Kerollmops a=curquiza
Replaces https://github.com/meilisearch/meilisearch/pull/3746 because of bors issue
Co-authored-by: TATHAGATA ROY <98920199+roy9495@users.noreply.github.com>
Co-authored-by: Clémentine U. - curqui <clementine@meilisearch.com>
3775: Last error code changes on the new get/delete documents routes r=dureuill a=irevoire
# Pull Request
## Related issue
Fixes#3774
## What does this PR do?
Following the specification: https://github.com/meilisearch/specifications/pull/236
1. Get rid of the `invalid_document_delete_filter` and always use the `invalid_document_filter`
2. Introduce a new `missing_document_filter` instead of returning `invalid_document_delete_filter` (that’s consistent with all the other routes that have a mandatory parameter)
3. Always return the `original_filter` in the details (potentially set to `null`) instead of hiding it if it wasn’t used
Co-authored-by: Tamo <tamo@meilisearch.com>
3768: Fix bugs in graph-based ranking rules + make `words` a graph-based ranking rule r=dureuill a=loiclec
This PR contains three changes:
## 1. Don't call the `words` ranking rule if the term matching strategy is `All`
This is because the purpose of `words` is only to remove nodes from the query graph. It would never do any useful work when the matching strategy was `All`. Remember that the universe was already computed before by computing all the docids corresponding to the "maximally reduced" query graph, which, in the case of `All`, is equal to the original graph.
## 2. The `words` ranking rule is replaced by a graph-based ranking rule.
This is for three reasons:
1. **performance**: graph-based ranking rules benefit from a lot of optimisations by default, which ensures that they are never too slow. The previous implementation of `words` could call `compute_query_graph_docids` many times if some words had to be removed from the query, which would be quite expensive. I was especially worried about its performance in cases where it is placed right after the `sort` ranking rule. Furthermore, `compute_query_graph_docids` would clone a lot of bitmaps many times unnecessarily.
2. **consistency**: every other ranking rule (except `sort`) is graph-based. It makes sense to implement `words` like that as well. It will automatically benefit from all the features, optimisations, and bug fixes that all the other ranking rules get.
3. **surfacing bugs**: as the first ranking rule to be called (most of the time), I'd like `words` to behave the same as the other ranking rules so that we can quickly detect bugs in our graph algorithms. This actually already happened, which is why this PR also contains a bug fix.
## 3. Fix the `update_all_costs_before_nodes` function
It is a bit difficult to explain what was wrong, but I'll try. The bug happened when we had graphs like:
<img width="730" alt="Screenshot 2023-05-16 at 10 58 57" src="https://github.com/meilisearch/meilisearch/assets/6040237/40db1a68-d852-4e89-99d5-0d65757242a7">
and we gave the node `is` as argument.
Then, we'd walk backwards from the node breadth-first. We'd update the costs of:
1. `sun`
2. `thesun`
3. `start`
4. `the`
which is an incorrect order. The correct order is:
1. `sun`
2. `thesun`
3. `the`
4. `start`
That is, we can only update the cost of a node when all of its successors have either already been visited or were not affected by the update to the node passed as argument. To solve this bug, I factored out the graph-traversal logic into a `traverse_breadth_first_backward` function.
Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
3757: Adjust the cost of edges in the `position` ranking rule by bucketing positions more aggressively r=loiclec a=loiclec
This PR significantly improves the performance of the `position` ranking rule when:
1. a query contains many words
2. the `position` ranking rule needs to be called many times
3. the score of the documents according to `position` is high
These conditions greatly increase:
1. the number of edge traversals that are needed to find a valid path from the `start` node to the `end` node
2. the number of edges that need to be deleted from the graph, and therefore the number of times that we need to recompute all the possible costs from START to END
As a result, a majority of the search time is spent in `visit_condition`, `visit_node`, and `update_all_costs_before_node`. This is frustrating because it often happens when the "universe" given to the rule consists of only a handful of document ids.
By limiting the number of possible edges between two nodes from `20` to `10`, we:
1. reduce the number of possible costs from START to END
2. reduce the number of edges that will be deleted
3. make it faster to update the costs after deleting an edge
4. reduce the number of buckets that need to be computed
In terms of relevancy, I don't think we lose or gain much. We still prefer terms that are in a lower positions, with decreasing precision as we go further. The previous choice of bucketing wasn't chosen in a principled way, and neither is this one. They both "feel" right to me.
Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
Co-authored-by: meili-bors[bot] <89034592+meili-bors[bot]@users.noreply.github.com>
3738: Add analytics on the get documents resource r=dureuill a=irevoire
# Pull Request
## Related issue
Fixes https://github.com/meilisearch/meilisearch/issues/3737
Related spec https://github.com/meilisearch/specifications/pull/234
## What does this PR do?
Add the analytics for the following routes:
- `GET` - `/indexes/:uid/documents`
- `GET` - `/indexes/:uid/documents/:doc_id`
- `POST` - `/indexes/:uid/documents/fetch`
These analytics are aggregated between two events:
- `Documents Fetched GET`
- `Documents Fetched POST`
That shares the same payload:
Property name | Description | Example |
|---------------|-------------|---------|
| `requests.total_received` | Total number of request received in this batch | 325 |
| `per_document_id` | `false` | false |
| `per_filter` | `true` if `POST /indexes/:indexUid/documents/fetch` endpoint was used with a filter in this batch, otherwise `false` | false |
| `pagination.max_limit` | Highest value given for the `limit` parameter in this batch | 60 |
| `pagination.max_offset` | Highest value given for the `offset` parameter in this batch | 1000 |
Co-authored-by: Tamo <tamo@meilisearch.com>
