Merge #3641

3641: Bring back changes from `release v1.1.0` into `main` after v1.1.0 release r=curquiza a=curquiza

Replace https://github.com/meilisearch/meilisearch/pull/3637 since we don't want to pull commits from `main` into `release-v1.1.0` when fixing git conflicts

Co-authored-by: ManyTheFish <many@meilisearch.com>
Co-authored-by: bors[bot] <26634292+bors[bot]@users.noreply.github.com>
Co-authored-by: Charlotte Vermandel <charlottevermandel@gmail.com>
Co-authored-by: Tamo <tamo@meilisearch.com>
Co-authored-by: Louis Dureuil <louis@meilisearch.com>
Co-authored-by: curquiza <clementine@meilisearch.com>
Co-authored-by: Clément Renault <clement@meilisearch.com>
Co-authored-by: Many the fish <many@meilisearch.com>

.github/workflows/publish-binaries.yml

@@ -96,14 +96,12 @@ jobs:
 
   publish-macos-apple-silicon:
     name: Publish binary for macOS silicon
-    runs-on: ${{ matrix.os }}
+    runs-on: macos-12
     needs: check-version
     strategy:
-      fail-fast: false
       matrix:
         include:
-          - os: macos-12
+          - target: aarch64-apple-darwin
-            target: aarch64-apple-darwin
             asset_name: meilisearch-macos-apple-silicon
     steps:
       - name: Checkout repository
@@ -132,21 +130,29 @@ jobs:
 
   publish-aarch64:
     name: Publish binary for aarch64
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     needs: check-version
+    container:
+      # Use ubuntu-18.04 to compile with glibc 2.27
+      image: ubuntu:18.04
     strategy:
-      fail-fast: false
       matrix:
         include:
-          - build: aarch64
+          - target: aarch64-unknown-linux-gnu
-            os: ubuntu-18.04
-            target: aarch64-unknown-linux-gnu
-            linker: gcc-aarch64-linux-gnu
-            use-cross: true
             asset_name: meilisearch-linux-aarch64
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
+      - name: Install needed dependencies
+        run: |
+          apt-get update -y && apt upgrade -y
+          apt-get install -y curl build-essential gcc-aarch64-linux-gnu
+      - name: Set up Docker for cross compilation
+        run: |
+          apt-get install -y curl apt-transport-https ca-certificates software-properties-common
+          curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+          add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
+          apt-get update -y && apt-get install -y docker-ce
       - name: Installing Rust toolchain
         uses: actions-rs/toolchain@v1
         with:
@@ -154,15 +160,7 @@ jobs:
           profile: minimal
           target: ${{ matrix.target }}
           override: true
-      - name: APT update
-        run: |
-          sudo apt update
-      - name: Install target specific tools
-        if: matrix.use-cross
-        run: |
-          sudo apt-get install -y ${{ matrix.linker }}
       - name: Configure target aarch64 GNU
-        if: matrix.target == 'aarch64-unknown-linux-gnu'
         ## Environment variable is not passed using env:
         ## LD gold won't work with MUSL
         # env:
@@ -176,8 +174,10 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: build
-          use-cross: ${{ matrix.use-cross }}
+          use-cross: true
           args: --release --target ${{ matrix.target }}
+        env:
+          CROSS_DOCKER_IN_DOCKER: true
       - name: List target output files
         run: ls -lR ./target
       - name: Upload the binary to release

filter-parser/src/lib.rs

@@ -141,7 +141,7 @@ pub enum FilterCondition<'a> {
     Or(Vec<Self>),
     And(Vec<Self>),
     GeoLowerThan { point: [Token<'a>; 2], radius: Token<'a> },
-    GeoBoundingBox { top_left_point: [Token<'a>; 2], bottom_right_point: [Token<'a>; 2] },
+    GeoBoundingBox { top_right_point: [Token<'a>; 2], bottom_left_point: [Token<'a>; 2] },
 }
 
 impl<'a> FilterCondition<'a> {
@@ -362,8 +362,8 @@ fn parse_geo_bounding_box(input: Span) -> IResult<FilterCondition> {
     }
 
     let res = FilterCondition::GeoBoundingBox {
-        top_left_point: [args[0][0].into(), args[0][1].into()],
+        top_right_point: [args[0][0].into(), args[0][1].into()],
-        bottom_right_point: [args[1][0].into(), args[1][1].into()],
+        bottom_left_point: [args[1][0].into(), args[1][1].into()],
     };
     Ok((input, res))
 }
@@ -830,7 +830,10 @@ impl<'a> std::fmt::Display for FilterCondition<'a> {
             FilterCondition::GeoLowerThan { point, radius } => {
                 write!(f, "_geoRadius({}, {}, {})", point[0], point[1], radius)
             }
-            FilterCondition::GeoBoundingBox { top_left_point, bottom_right_point } => {
+            FilterCondition::GeoBoundingBox {
+                top_right_point: top_left_point,
+                bottom_left_point: bottom_right_point,
+            } => {
                 write!(
                     f,
                     "_geoBoundingBox([{}, {}], [{}, {}])",

index-scheduler/src/batch.rs

@@ -675,9 +675,6 @@ impl IndexScheduler {
                 }
 
                 // 3. Snapshot every indexes
-                // TODO we are opening all of the indexes it can be too much we should unload all
-                //      of the indexes we are trying to open. It would be even better to only unload
-                //      the ones that were opened by us. Or maybe use a LRU in the index mapper.
                 for result in self.index_mapper.index_mapping.iter(&rtxn)? {
                     let (name, uuid) = result?;
                     let index = self.index_mapper.index(&rtxn, name)?;
@@ -714,6 +711,14 @@ impl IndexScheduler {
                 // 5.3 Change the permission to make the snapshot readonly
                 let mut permissions = file.metadata()?.permissions();
                 permissions.set_readonly(true);
+                #[cfg(unix)]
+                {
+                    use std::os::unix::fs::PermissionsExt;
+                    #[allow(clippy::non_octal_unix_permissions)]
+                    //                     rwxrwxrwx
+                    permissions.set_mode(0b100100100);
+                }
+
                 file.set_permissions(permissions)?;
 
                 for task in &mut tasks {
@@ -828,20 +833,38 @@ impl IndexScheduler {
                 Ok(vec![task])
             }
             Batch::IndexOperation { op, must_create_index } => {
-                let index_uid = op.index_uid();
+                let index_uid = op.index_uid().to_string();
                 let index = if must_create_index {
                     // create the index if it doesn't already exist
                     let wtxn = self.env.write_txn()?;
-                    self.index_mapper.create_index(wtxn, index_uid, None)?
+                    self.index_mapper.create_index(wtxn, &index_uid, None)?
                 } else {
                     let rtxn = self.env.read_txn()?;
-                    self.index_mapper.index(&rtxn, index_uid)?
+                    self.index_mapper.index(&rtxn, &index_uid)?
                 };
 
                 let mut index_wtxn = index.write_txn()?;
                 let tasks = self.apply_index_operation(&mut index_wtxn, &index, op)?;
                 index_wtxn.commit()?;
 
+                // if the update processed successfully, we're going to store the new
+                // stats of the index. Since the tasks have already been processed and
+                // this is a non-critical operation. If it fails, we should not fail
+                // the entire batch.
+                let res = || -> Result<()> {
+                    let index_rtxn = index.read_txn()?;
+                    let stats = crate::index_mapper::IndexStats::new(&index, &index_rtxn)?;
+                    let mut wtxn = self.env.write_txn()?;
+                    self.index_mapper.store_stats_of(&mut wtxn, &index_uid, &stats)?;
+                    wtxn.commit()?;
+                    Ok(())
+                }();
+
+                match res {
+                    Ok(_) => (),
+                    Err(e) => error!("Could not write the stats of the index {}", e),
+                }
+
                 Ok(tasks)
             }
             Batch::IndexCreation { index_uid, primary_key, task } => {
@@ -872,9 +895,31 @@ impl IndexScheduler {
                     )?;
                     index_wtxn.commit()?;
                 }
+
+                // drop rtxn before starting a new wtxn on the same db
+                rtxn.commit()?;
+
                 task.status = Status::Succeeded;
                 task.details = Some(Details::IndexInfo { primary_key });
 
+                // if the update processed successfully, we're going to store the new
+                // stats of the index. Since the tasks have already been processed and
+                // this is a non-critical operation. If it fails, we should not fail
+                // the entire batch.
+                let res = || -> Result<()> {
+                    let mut wtxn = self.env.write_txn()?;
+                    let index_rtxn = index.read_txn()?;
+                    let stats = crate::index_mapper::IndexStats::new(&index, &index_rtxn)?;
+                    self.index_mapper.store_stats_of(&mut wtxn, &index_uid, &stats)?;
+                    wtxn.commit()?;
+                    Ok(())
+                }();
+
+                match res {
+                    Ok(_) => (),
+                    Err(e) => error!("Could not write the stats of the index {}", e),
+                }
+
                 Ok(vec![task])
             }
             Batch::IndexDeletion { index_uid, index_has_been_created, mut tasks } => {

index-scheduler/src/index_mapper/mod.rs

@@ -4,10 +4,11 @@ use std::time::Duration;
 use std::{fs, thread};
 
 use log::error;
-use meilisearch_types::heed::types::Str;
+use meilisearch_types::heed::types::{SerdeJson, Str};
 use meilisearch_types::heed::{Database, Env, RoTxn, RwTxn};
 use meilisearch_types::milli::update::IndexerConfig;
-use meilisearch_types::milli::Index;
+use meilisearch_types::milli::{FieldDistribution, Index};
+use serde::{Deserialize, Serialize};
 use time::OffsetDateTime;
 use uuid::Uuid;
 
@@ -19,6 +20,7 @@ use crate::{Error, Result};
 mod index_map;
 
 const INDEX_MAPPING: &str = "index-mapping";
+const INDEX_STATS: &str = "index-stats";
 
 /// Structure managing meilisearch's indexes.
 ///
@@ -52,6 +54,11 @@ pub struct IndexMapper {
 
     /// Map an index name with an index uuid currently available on disk.
     pub(crate) index_mapping: Database<Str, UuidCodec>,
+    /// Map an index UUID with the cached stats associated to the index.
+    ///
+    /// Using an UUID forces to use the index_mapping table to recover the index behind a name, ensuring
+    /// consistency wrt index swapping.
+    pub(crate) index_stats: Database<UuidCodec, SerdeJson<IndexStats>>,
 
     /// Path to the folder where the LMDB environments of each index are.
     base_path: PathBuf,
@@ -76,6 +83,39 @@ pub enum IndexStatus {
     Available(Index),
 }
 
+/// The statistics that can be computed from an `Index` object.
+#[derive(Serialize, Deserialize, Debug)]
+pub struct IndexStats {
+    /// Number of documents in the index.
+    pub number_of_documents: u64,
+    /// Size of the index' DB, in bytes.
+    pub database_size: u64,
+    /// Association of every field name with the number of times it occurs in the documents.
+    pub field_distribution: FieldDistribution,
+    /// Creation date of the index.
+    pub created_at: OffsetDateTime,
+    /// Date of the last update of the index.
+    pub updated_at: OffsetDateTime,
+}
+
+impl IndexStats {
+    /// Compute the stats of an index
+    ///
+    /// # Parameters
+    ///
+    /// - rtxn: a RO transaction for the index, obtained from `Index::read_txn()`.
+    pub fn new(index: &Index, rtxn: &RoTxn) -> Result<Self> {
+        let database_size = index.on_disk_size()?;
+        Ok(IndexStats {
+            number_of_documents: index.number_of_documents(rtxn)?,
+            database_size,
+            field_distribution: index.field_distribution(rtxn)?,
+            created_at: index.created_at(rtxn)?,
+            updated_at: index.updated_at(rtxn)?,
+        })
+    }
+}
+
 impl IndexMapper {
     pub fn new(
         env: &Env,
@@ -88,6 +128,7 @@ impl IndexMapper {
         Ok(Self {
             index_map: Arc::new(RwLock::new(IndexMap::new(index_count))),
             index_mapping: env.create_database(Some(INDEX_MAPPING))?,
+            index_stats: env.create_database(Some(INDEX_STATS))?,
             base_path,
             index_base_map_size,
             index_growth_amount,
@@ -140,6 +181,9 @@ impl IndexMapper {
             .get(&wtxn, name)?
             .ok_or_else(|| Error::IndexNotFound(name.to_string()))?;
 
+        // Not an error if the index had no stats in cache.
+        self.index_stats.delete(&mut wtxn, &uuid)?;
+
         // Once we retrieved the UUID of the index we remove it from the mapping table.
         assert!(self.index_mapping.delete(&mut wtxn, name)?);
 
@@ -360,6 +404,45 @@ impl IndexMapper {
         Ok(())
     }
 
+    /// The stats of an index.
+    ///
+    /// If available in the cache, they are directly returned.
+    /// Otherwise, the `Index` is opened to compute the stats on the fly (the result is not cached).
+    /// The stats for an index are cached after each `Index` update.
+    pub fn stats_of(&self, rtxn: &RoTxn, index_uid: &str) -> Result<IndexStats> {
+        let uuid = self
+            .index_mapping
+            .get(rtxn, index_uid)?
+            .ok_or_else(|| Error::IndexNotFound(index_uid.to_string()))?;
+
+        match self.index_stats.get(rtxn, &uuid)? {
+            Some(stats) => Ok(stats),
+            None => {
+                let index = self.index(rtxn, index_uid)?;
+                let index_rtxn = index.read_txn()?;
+                IndexStats::new(&index, &index_rtxn)
+            }
+        }
+    }
+
+    /// Stores the new stats for an index.
+    ///
+    /// Expected usage is to compute the stats the index using `IndexStats::new`, the pass it to this function.
+    pub fn store_stats_of(
+        &self,
+        wtxn: &mut RwTxn,
+        index_uid: &str,
+        stats: &IndexStats,
+    ) -> Result<()> {
+        let uuid = self
+            .index_mapping
+            .get(wtxn, index_uid)?
+            .ok_or_else(|| Error::IndexNotFound(index_uid.to_string()))?;
+
+        self.index_stats.put(wtxn, &uuid, stats)?;
+        Ok(())
+    }
+
     pub fn index_exists(&self, rtxn: &RoTxn, name: &str) -> Result<bool> {
         Ok(self.index_mapping.get(rtxn, name)?.is_some())
     }

index-scheduler/src/insta_snapshot.rs

@@ -254,6 +254,16 @@ pub fn snapshot_canceled_by(
     snap
 }
 pub fn snapshot_index_mapper(rtxn: &RoTxn, mapper: &IndexMapper) -> String {
+    let mut s = String::new();
     let names = mapper.index_names(rtxn).unwrap();
-    format!("{names:?}")
+
+    for name in names {
+        let stats = mapper.stats_of(rtxn, &name).unwrap();
+        s.push_str(&format!(
+            "{name}: {{ number_of_documents: {}, field_distribution: {:?} }}\n",
+            stats.number_of_documents, stats.field_distribution
+        ));
+    }
+
+    s
 }

index-scheduler/src/lib.rs

@@ -45,10 +45,9 @@ use file_store::FileStore;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::heed::types::{OwnedType, SerdeBincode, SerdeJson, Str};
 use meilisearch_types::heed::{self, Database, Env, RoTxn, RwTxn};
-use meilisearch_types::milli;
 use meilisearch_types::milli::documents::DocumentsBatchBuilder;
 use meilisearch_types::milli::update::IndexerConfig;
-use meilisearch_types::milli::{CboRoaringBitmapCodec, Index, RoaringBitmapCodec, BEU32};
+use meilisearch_types::milli::{self, CboRoaringBitmapCodec, Index, RoaringBitmapCodec, BEU32};
 use meilisearch_types::tasks::{Kind, KindWithContent, Status, Task};
 use roaring::RoaringBitmap;
 use synchronoise::SignalEvent;
@@ -567,7 +566,7 @@ impl IndexScheduler {
     }
 
     /// Return the name of all indexes without opening them.
-    pub fn index_names(self) -> Result<Vec<String>> {
+    pub fn index_names(&self) -> Result<Vec<String>> {
         let rtxn = self.env.read_txn()?;
         self.index_mapper.index_names(&rtxn)
     }
@@ -1080,6 +1079,14 @@ impl IndexScheduler {
         Ok(TickOutcome::TickAgain(processed_tasks))
     }
 
+    pub fn index_stats(&self, index_uid: &str) -> Result<IndexStats> {
+        let is_indexing = self.is_index_processing(index_uid)?;
+        let rtxn = self.read_txn()?;
+        let index_stats = self.index_mapper.stats_of(&rtxn, index_uid)?;
+
+        Ok(IndexStats { is_indexing, inner_stats: index_stats })
+    }
+
     pub(crate) fn delete_persisted_task_data(&self, task: &Task) -> Result<()> {
         match task.content_uuid() {
             Some(content_file) => self.delete_update_file(content_file),
@@ -1237,6 +1244,34 @@ impl<'a> Dump<'a> {
                 }
             };
         }
+
+        utils::insert_task_datetime(
+            &mut self.wtxn,
+            self.index_scheduler.enqueued_at,
+            task.enqueued_at,
+            task.uid,
+        )?;
+
+        // we can't override the started_at & finished_at, so we must only set it if the tasks is finished and won't change
+        if matches!(task.status, Status::Succeeded | Status::Failed | Status::Canceled) {
+            if let Some(started_at) = task.started_at {
+                utils::insert_task_datetime(
+                    &mut self.wtxn,
+                    self.index_scheduler.started_at,
+                    started_at,
+                    task.uid,
+                )?;
+            }
+            if let Some(finished_at) = task.finished_at {
+                utils::insert_task_datetime(
+                    &mut self.wtxn,
+                    self.index_scheduler.finished_at,
+                    finished_at,
+                    task.uid,
+                )?;
+            }
+        }
+
         self.statuses.entry(task.status).or_insert(RoaringBitmap::new()).insert(task.uid);
         self.kinds.entry(task.kind.as_kind()).or_insert(RoaringBitmap::new()).insert(task.uid);
 
@@ -1282,6 +1317,17 @@ struct IndexBudget {
     task_db_size: usize,
 }
 
+/// The statistics that can be computed from an `Index` object and the scheduler.
+///
+/// Compared with `index_mapper::IndexStats`, it adds the scheduling status.
+#[derive(Debug)]
+pub struct IndexStats {
+    /// Whether this index is currently performing indexation, according to the scheduler.
+    pub is_indexing: bool,
+    /// Internal stats computed from the index.
+    pub inner_stats: index_mapper::IndexStats,
+}
+
 #[cfg(test)]
 mod tests {
     use std::io::{BufWriter, Seek, Write};

index-scheduler/src/snapshots/lib.rs/cancel_enqueued_task/cancel_processed.snap

@@ -1,6 +1,5 @@
 ---
 source: index-scheduler/src/lib.rs
-assertion_line: 1755
 ---
 ### Autobatching Enabled = true
 ### Processing Tasks:
@@ -23,7 +22,7 @@ canceled [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 1 [0,]

index-scheduler/src/snapshots/lib.rs/cancel_enqueued_task/initial_tasks_enqueued.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_mix_of_tasks/aborted_indexation.snap

@@ -25,7 +25,9 @@ catto [0,]
 wolfo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["beavero", "catto"]
+beavero: { number_of_documents: 0, field_distribution: {} }
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_mix_of_tasks/cancel_processed.snap

@@ -1,6 +1,5 @@
 ---
 source: index-scheduler/src/lib.rs
-assertion_line: 1859
 ---
 ### Autobatching Enabled = true
 ### Processing Tasks:
@@ -27,7 +26,9 @@ catto [0,]
 wolfo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["beavero", "catto"]
+beavero: { number_of_documents: 0, field_distribution: {} }
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 3 [1,2,]

index-scheduler/src/snapshots/lib.rs/cancel_mix_of_tasks/first_task_processed.snap

@@ -23,7 +23,8 @@ catto [0,]
 wolfo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_mix_of_tasks/processing_second_task_cancel_enqueued.snap

@@ -25,7 +25,8 @@ catto [0,]
 wolfo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_processing_task/aborted_indexation.snap

@@ -20,7 +20,8 @@ enqueued [0,1,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_processing_task/cancel_processed.snap

@@ -1,6 +1,5 @@
 ---
 source: index-scheduler/src/lib.rs
-assertion_line: 1818
 ---
 ### Autobatching Enabled = true
 ### Processing Tasks:
@@ -23,7 +22,8 @@ canceled [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 1 [0,]

index-scheduler/src/snapshots/lib.rs/cancel_processing_task/cancel_task_registered.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_processing_task/initial_task_processing.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_processing_task/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_succeeded_task/cancel_processed.snap

@@ -21,7 +21,8 @@ succeeded [0,1,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 1 []

index-scheduler/src/snapshots/lib.rs/cancel_succeeded_task/initial_task_processed.snap

@@ -19,7 +19,8 @@ succeeded [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/cancel_succeeded_task/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/do_not_batch_task_of_different_indexes/all_tasks_processed.snap

@@ -27,7 +27,10 @@ doggos [0,3,]
 girafos [2,5,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["cattos", "doggos", "girafos"]
+cattos: { number_of_documents: 0, field_distribution: {} }
+doggos: { number_of_documents: 0, field_distribution: {} }
+girafos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition/after_register.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition/after_the_batch_creation.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition/once_everything_is_processed.snap

@@ -19,7 +19,8 @@ succeeded [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 1, field_distribution: {"doggo": 1, "id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_document_deletion/after_processing_the_batch.snap

@@ -21,7 +21,8 @@ succeeded [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 1, field_distribution: {"doggo": 1, "id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_document_deletion/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_document_deletion/registered_the_second_task.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion/before_index_creation.snap

@@ -23,7 +23,8 @@ succeeded [0,]
 doggos [0,1,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion/both_task_succeeded.snap

@@ -23,7 +23,7 @@ succeeded [0,1,2,]
 doggos [0,1,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion/registered_the_second_task.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion/registered_the_third_task.snap

@@ -22,7 +22,7 @@ enqueued [0,1,2,]
 doggos [0,1,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion_on_unexisting_index/1.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_addition_and_index_deletion_on_unexisting_index/2.snap

@@ -21,7 +21,7 @@ succeeded [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_deletion_and_document_addition/after_failing_the_deletion.snap

@@ -21,7 +21,7 @@ failed [0,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_deletion_and_document_addition/after_last_successful_addition.snap

@@ -22,7 +22,8 @@ failed [0,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 3, field_distribution: {"catto": 1, "doggo": 2, "id": 3} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_deletion_and_document_addition/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/document_deletion_and_document_addition/registered_the_second_task.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_process_batch_for_document_addition/document_addition_batch_created.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_process_batch_for_document_addition/document_addition_failed.snap

@@ -19,7 +19,7 @@ failed [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_process_batch_for_document_addition/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_process_batch_for_index_creation/after_register.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_process_batch_for_index_creation/index_creation_failed.snap

@@ -19,7 +19,7 @@ failed [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_update_task_after_process_batch_success_for_document_addition/after_batch_succeeded.snap

@@ -18,7 +18,8 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 1, field_distribution: {"doggo": 1, "id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_update_task_after_process_batch_success_for_document_addition/after_failing_to_commit.snap

@@ -18,7 +18,8 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 1, field_distribution: {"doggo": 1, "id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_update_task_after_process_batch_success_for_document_addition/document_addition_succeeded_but_index_scheduler_not_updated.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_update_task_after_process_batch_success_for_document_addition/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/fail_in_update_task_after_process_batch_success_for_document_addition/task_successfully_processed.snap

@@ -19,7 +19,8 @@ succeeded [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 1, field_distribution: {"doggo": 1, "id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/insert_task_while_another_task_is_processing/after_batch_creation.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 index_a [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/insert_task_while_another_task_is_processing/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 index_a [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/insert_task_while_another_task_is_processing/registered_the_second_task.snap

@@ -20,7 +20,7 @@ index_a [0,]
 index_b [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/insert_task_while_another_task_is_processing/registered_the_third_task.snap

@@ -22,7 +22,7 @@ index_a [0,2,]
 index_b [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/panic_in_process_batch_for_index_creation/index_creation_failed.snap

@@ -19,7 +19,7 @@ failed [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/panic_in_process_batch_for_index_creation/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 catto [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/processed_the_first_task.snap

@@ -23,7 +23,8 @@ cattos [1,]
 doggos [0,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/processed_the_second_task.snap

@@ -23,7 +23,9 @@ cattos [1,]
 doggos [0,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["cattos", "doggos"]
+cattos: { number_of_documents: 0, field_distribution: {} }
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/processed_the_third_task.snap

@@ -23,7 +23,8 @@ cattos [1,]
 doggos [0,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["cattos"]
+cattos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/registered_the_second_task.snap

@@ -20,7 +20,7 @@ cattos [1,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_inserted_without_new_signal/registered_the_third_task.snap

@@ -22,7 +22,7 @@ cattos [1,]
 doggos [0,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/first.snap

@@ -23,7 +23,8 @@ succeeded [0,]
 doggos [0,1,2,3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/fourth.snap

@@ -23,7 +23,8 @@ succeeded [0,1,2,3,]
 doggos [0,1,2,3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggos [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/registered_the_fourth_task.snap

@@ -22,7 +22,7 @@ enqueued [0,1,2,3,]
 doggos [0,1,2,3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/registered_the_second_task.snap

@@ -20,7 +20,7 @@ enqueued [0,1,]
 doggos [0,1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/registered_the_third_task.snap

@@ -21,7 +21,7 @@ enqueued [0,1,2,]
 doggos [0,1,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/second.snap

@@ -23,7 +23,8 @@ succeeded [0,1,]
 doggos [0,1,2,3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/process_tasks_without_autobatching/third.snap

@@ -23,7 +23,8 @@ succeeded [0,1,2,]
 doggos [0,1,2,3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["doggos"]
+doggos: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_canceled_by/start.snap

@@ -26,7 +26,8 @@ catto [0,2,]
 doggo [1,2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 3 [1,2,]

index-scheduler/src/snapshots/lib.rs/query_tasks_from_and_limit/processed_all_tasks.snap

@@ -23,7 +23,10 @@ doggo [0,]
 whalo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto", "doggo", "whalo"]
+catto: { number_of_documents: 0, field_distribution: {} }
+doggo: { number_of_documents: 0, field_distribution: {} }
+whalo: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_from_and_limit/registered_the_first_task.snap

@@ -18,7 +18,7 @@ enqueued [0,]
 doggo [0,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_from_and_limit/registered_the_second_task.snap

@@ -20,7 +20,7 @@ doggo [0,]
 whalo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_from_and_limit/registered_the_third_task.snap

@@ -22,7 +22,7 @@ doggo [0,]
 whalo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_simple/end.snap

@@ -24,7 +24,9 @@ doggo [1,]
 whalo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto", "doggo"]
+catto: { number_of_documents: 0, field_distribution: {} }
+doggo: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_simple/start.snap

@@ -22,7 +22,7 @@ doggo [1,]
 whalo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/query_tasks_special_rules/start.snap

@@ -24,7 +24,7 @@ doggo [1,2,]
 whalo [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/register/everything_is_succesfully_registered.snap

@@ -23,7 +23,7 @@ catto [0,1,2,]
 doggo [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/create_a.snap

@@ -25,7 +25,8 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a"]
+a: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/create_b.snap

@@ -25,7 +25,9 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/create_c.snap

@@ -25,7 +25,10 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/create_d.snap

@@ -25,7 +25,11 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/first_swap_processed.snap

@@ -28,7 +28,11 @@ c [3,4,5,]
 d [2,4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/first_swap_registered.snap

@@ -27,7 +27,11 @@ c [2,4,]
 d [3,4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/second_swap_processed.snap

@@ -28,7 +28,11 @@ c [1,4,5,]
 d [2,4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/third_empty_swap_processed.snap

@@ -29,7 +29,11 @@ c [1,4,5,]
 d [2,4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes/two_swaps_registered.snap

@@ -28,7 +28,11 @@ c [2,4,5,]
 d [3,4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes_errors/after_the_index_creation.snap

@@ -25,7 +25,11 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes_errors/first_swap_failed.snap

@@ -30,7 +30,11 @@ e [4,]
 f [4,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/swap_indexes_errors/initial_tasks_processed.snap

@@ -25,7 +25,11 @@ c [2,]
 d [3,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["a", "b", "c", "d"]
+a: { number_of_documents: 0, field_distribution: {} }
+b: { number_of_documents: 0, field_distribution: {} }
+c: { number_of_documents: 0, field_distribution: {} }
+d: { number_of_documents: 0, field_distribution: {} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_delete_same_task_twice/initial_tasks_enqueued.snap

@@ -20,7 +20,7 @@ catto [0,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_delete_same_task_twice/initial_tasks_processed.snap

@@ -21,7 +21,8 @@ catto [0,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_delete_same_task_twice/task_deletion_processed.snap

@@ -22,7 +22,8 @@ succeeded [2,3,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_deleteable/after_registering_the_task_deletion.snap

@@ -23,7 +23,8 @@ catto [0,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_deleteable/initial_tasks_enqueued.snap

@@ -20,7 +20,7 @@ catto [0,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_deleteable/initial_tasks_processed.snap

@@ -21,7 +21,8 @@ catto [0,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_deleteable/task_deletion_processed.snap

@@ -21,7 +21,8 @@ succeeded [2,]
 doggo [1,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-["catto"]
+catto: { number_of_documents: 1, field_distribution: {"id": 1} }
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_undeleteable/initial_tasks_enqueued.snap

@@ -22,7 +22,7 @@ catto [0,1,]
 doggo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_undeleteable/task_deletion_done.snap

@@ -25,7 +25,7 @@ catto [0,1,]
 doggo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_undeleteable/task_deletion_enqueued.snap

@@ -24,7 +24,7 @@ catto [0,1,]
 doggo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By:
 

index-scheduler/src/snapshots/lib.rs/task_deletion_undeleteable/task_deletion_processing.snap

@@ -24,7 +24,7 @@ catto [0,1,]
 doggo [2,]
 ----------------------------------------------------------------------
 ### Index Mapper:
-[]
+
 ----------------------------------------------------------------------
 ### Canceled By: