fix: implement a CacheStrategy to ensure compaction use cache correctly

.github/workflows/develop.yml

@@ -84,7 +84,7 @@ jobs:
           # Shares across multiple jobs
           shared-key: "check-toml"
       - name: Install taplo
-        run: cargo +stable install taplo-cli --version ^0.9 --locked
+        run: cargo +stable install taplo-cli --version ^0.9 --locked --force
       - name: Run taplo
         run: taplo format --check
 
@@ -107,7 +107,7 @@ jobs:
           shared-key: "build-binaries"
       - name: Install cargo-gc-bin
         shell: bash
-        run: cargo install cargo-gc-bin
+        run: cargo install cargo-gc-bin --force
       - name: Build greptime binaries
         shell: bash
         # `cargo gc` will invoke `cargo build` with specified args
@@ -163,7 +163,7 @@ jobs:
         run: |
           sudo apt-get install -y libfuzzer-14-dev
           rustup install nightly
-          cargo +nightly install cargo-fuzz cargo-gc-bin
+          cargo +nightly install cargo-fuzz cargo-gc-bin --force
       - name: Download pre-built binaries
         uses: actions/download-artifact@v4
         with:
@@ -220,7 +220,7 @@ jobs:
         shell: bash
         run: |
           sudo apt update && sudo apt install -y libfuzzer-14-dev
-          cargo install cargo-fuzz cargo-gc-bin
+          cargo install cargo-fuzz cargo-gc-bin --force
       - name: Download pre-built binariy
         uses: actions/download-artifact@v4
         with:
@@ -268,7 +268,7 @@ jobs:
           shared-key: "build-greptime-ci"
       - name: Install cargo-gc-bin
         shell: bash
-        run: cargo install cargo-gc-bin
+        run: cargo install cargo-gc-bin --force
       - name: Build greptime bianry
         shell: bash
         # `cargo gc` will invoke `cargo build` with specified args
@@ -338,7 +338,7 @@ jobs:
         run: |
           sudo apt-get install -y libfuzzer-14-dev
           rustup install nightly
-          cargo +nightly install cargo-fuzz cargo-gc-bin
+          cargo +nightly install cargo-fuzz cargo-gc-bin --force
       # Downloads ci image
       - name: Download pre-built binariy
         uses: actions/download-artifact@v4
@@ -487,7 +487,7 @@ jobs:
         run: |
           sudo apt-get install -y libfuzzer-14-dev
           rustup install nightly
-          cargo +nightly install cargo-fuzz cargo-gc-bin
+          cargo +nightly install cargo-fuzz cargo-gc-bin --force
       # Downloads ci image
       - name: Download pre-built binariy
         uses: actions/download-artifact@v4

src/mito2/src/cache.rs

@@ -55,6 +55,195 @@ const FILE_TYPE: &str = "file";
 /// Metrics type key for selector result cache.
 const SELECTOR_RESULT_TYPE: &str = "selector_result";
 
+/// Cache strategies that may only enable a subset of caches.
+#[derive(Clone)]
+pub enum CacheStrategy {
+    /// Strategy for normal operations.
+    /// Doesn't disable any cache.
+    EnableAll(CacheManagerRef),
+    /// Strategy for compaction.
+    /// Disables some caches during compaction to avoid affecting queries.
+    /// Enables the write cache so that the compaction can read files cached
+    /// in the write cache and write the compacted files back to the write cache.
+    Compaction(CacheManagerRef),
+    /// Do not use any cache.
+    Disabled,
+}
+
+impl CacheStrategy {
+    /// Calls [CacheManager::get_parquet_meta_data()].
+    pub async fn get_parquet_meta_data(
+        &self,
+        region_id: RegionId,
+        file_id: FileId,
+    ) -> Option<Arc<ParquetMetaData>> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager
+                    .get_parquet_meta_data(region_id, file_id)
+                    .await
+            }
+            CacheStrategy::Compaction(cache_manager) => {
+                cache_manager
+                    .get_parquet_meta_data(region_id, file_id)
+                    .await
+            }
+            CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::get_parquet_meta_data_from_mem_cache()].
+    pub fn get_parquet_meta_data_from_mem_cache(
+        &self,
+        region_id: RegionId,
+        file_id: FileId,
+    ) -> Option<Arc<ParquetMetaData>> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager.get_parquet_meta_data_from_mem_cache(region_id, file_id)
+            }
+            CacheStrategy::Compaction(cache_manager) => {
+                cache_manager.get_parquet_meta_data_from_mem_cache(region_id, file_id)
+            }
+            CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::put_parquet_meta_data()].
+    pub fn put_parquet_meta_data(
+        &self,
+        region_id: RegionId,
+        file_id: FileId,
+        metadata: Arc<ParquetMetaData>,
+    ) {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager.put_parquet_meta_data(region_id, file_id, metadata);
+            }
+            CacheStrategy::Compaction(cache_manager) => {
+                cache_manager.put_parquet_meta_data(region_id, file_id, metadata);
+            }
+            CacheStrategy::Disabled => {}
+        }
+    }
+
+    /// Calls [CacheManager::remove_parquet_meta_data()].
+    pub fn remove_parquet_meta_data(&self, region_id: RegionId, file_id: FileId) {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager.remove_parquet_meta_data(region_id, file_id);
+            }
+            CacheStrategy::Compaction(cache_manager) => {
+                cache_manager.remove_parquet_meta_data(region_id, file_id);
+            }
+            CacheStrategy::Disabled => {}
+        }
+    }
+
+    /// Calls [CacheManager::get_repeated_vector()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn get_repeated_vector(
+        &self,
+        data_type: &ConcreteDataType,
+        value: &Value,
+    ) -> Option<VectorRef> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager.get_repeated_vector(data_type, value)
+            }
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::put_repeated_vector()].
+    /// It does nothing if the strategy isn't [CacheStrategy::EnableAll].
+    pub fn put_repeated_vector(&self, value: Value, vector: VectorRef) {
+        if let CacheStrategy::EnableAll(cache_manager) = self {
+            cache_manager.put_repeated_vector(value, vector);
+        }
+    }
+
+    /// Calls [CacheManager::get_pages()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn get_pages(&self, page_key: &PageKey) -> Option<Arc<PageValue>> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => cache_manager.get_pages(page_key),
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::put_pages()].
+    /// It does nothing if the strategy isn't [CacheStrategy::EnableAll].
+    pub fn put_pages(&self, page_key: PageKey, pages: Arc<PageValue>) {
+        if let CacheStrategy::EnableAll(cache_manager) = self {
+            cache_manager.put_pages(page_key, pages);
+        }
+    }
+
+    /// Calls [CacheManager::get_selector_result()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn get_selector_result(
+        &self,
+        selector_key: &SelectorResultKey,
+    ) -> Option<Arc<SelectorResultValue>> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => {
+                cache_manager.get_selector_result(selector_key)
+            }
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::put_selector_result()].
+    /// It does nothing if the strategy isn't [CacheStrategy::EnableAll].
+    pub fn put_selector_result(
+        &self,
+        selector_key: SelectorResultKey,
+        result: Arc<SelectorResultValue>,
+    ) {
+        if let CacheStrategy::EnableAll(cache_manager) = self {
+            cache_manager.put_selector_result(selector_key, result);
+        }
+    }
+
+    /// Calls [CacheManager::write_cache()].
+    /// It returns None if the strategy is [CacheStrategy::Disabled].
+    pub fn write_cache(&self) -> Option<&WriteCacheRef> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => cache_manager.write_cache(),
+            CacheStrategy::Compaction(cache_manager) => cache_manager.write_cache(),
+            CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::index_cache()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn index_cache(&self) -> Option<&InvertedIndexCacheRef> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => cache_manager.index_cache(),
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::bloom_filter_index_cache()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn bloom_filter_index_cache(&self) -> Option<&BloomFilterIndexCacheRef> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => cache_manager.bloom_filter_index_cache(),
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+
+    /// Calls [CacheManager::puffin_metadata_cache()].
+    /// It returns None if the strategy is [CacheStrategy::Compaction] or [CacheStrategy::Disabled].
+    pub fn puffin_metadata_cache(&self) -> Option<&PuffinMetadataCacheRef> {
+        match self {
+            CacheStrategy::EnableAll(cache_manager) => cache_manager.puffin_metadata_cache(),
+            CacheStrategy::Compaction(_) | CacheStrategy::Disabled => None,
+        }
+    }
+}
+
 /// Manages cached data for the engine.
 ///
 /// All caches are disabled by default.

src/mito2/src/cache/write_cache.rs

@@ -332,7 +332,7 @@ mod tests {
     use super::*;
     use crate::access_layer::OperationType;
     use crate::cache::test_util::new_fs_store;
-    use crate::cache::CacheManager;
+    use crate::cache::{CacheManager, CacheStrategy};
     use crate::region::options::IndexOptions;
     use crate::sst::file::FileId;
     use crate::sst::location::{index_file_path, sst_file_path};
@@ -495,7 +495,7 @@ mod tests {
 
         // Read metadata from write cache
         let builder = ParquetReaderBuilder::new(data_home, handle.clone(), mock_store.clone())
-            .cache(Some(cache_manager.clone()));
+            .cache(CacheStrategy::EnableAll(cache_manager.clone()));
         let reader = builder.build().await.unwrap();
 
         // Check parquet metadata

src/mito2/src/compaction.rs

@@ -43,7 +43,7 @@ use table::predicate::Predicate;
 use tokio::sync::mpsc::{self, Sender};
 
 use crate::access_layer::AccessLayerRef;
-use crate::cache::CacheManagerRef;
+use crate::cache::{CacheManagerRef, CacheStrategy};
 use crate::compaction::compactor::{CompactionRegion, CompactionVersion, DefaultCompactor};
 use crate::compaction::picker::{new_picker, CompactionTask};
 use crate::compaction::task::CompactionTaskImpl;
@@ -573,6 +573,7 @@ pub struct SerializedCompactionOutput {
 struct CompactionSstReaderBuilder<'a> {
     metadata: RegionMetadataRef,
     sst_layer: AccessLayerRef,
+    cache: CacheManagerRef,
     inputs: &'a [FileHandle],
     append_mode: bool,
     filter_deleted: bool,
@@ -586,7 +587,8 @@ impl<'a> CompactionSstReaderBuilder<'a> {
         let mut scan_input = ScanInput::new(self.sst_layer, ProjectionMapper::all(&self.metadata)?)
             .with_files(self.inputs.to_vec())
             .with_append_mode(self.append_mode)
-            .with_cache(None)
+            // We use special cache strategy for compaction.
+            .with_cache(CacheStrategy::Compaction(self.cache))
             .with_filter_deleted(self.filter_deleted)
             // We ignore file not found error during compaction.
             .with_ignore_file_not_found(true)

src/mito2/src/compaction/compactor.rs

@@ -307,6 +307,7 @@ impl Compactor for DefaultCompactor {
                 let reader = CompactionSstReaderBuilder {
                     metadata: region_metadata.clone(),
                     sst_layer: sst_layer.clone(),
+                    cache: cache_manager.clone(),
                     inputs: &output.inputs,
                     append_mode,
                     filter_deleted: output.filter_deleted,

src/mito2/src/engine.rs

@@ -84,6 +84,7 @@ use store_api::region_request::{AffectedRows, RegionOpenRequest, RegionRequest};
 use store_api::storage::{RegionId, ScanRequest};
 use tokio::sync::{oneshot, Semaphore};
 
+use crate::cache::CacheStrategy;
 use crate::config::MitoConfig;
 use crate::error::{
     InvalidRequestSnafu, JoinSnafu, RecvSnafu, RegionNotFoundSnafu, Result, SerdeJsonSnafu,
@@ -428,7 +429,7 @@ impl EngineInner {
             version,
             region.access_layer.clone(),
             request,
-            Some(cache_manager),
+            CacheStrategy::EnableAll(cache_manager),
         )
         .with_parallel_scan_channel_size(self.config.parallel_scan_channel_size)
         .with_ignore_inverted_index(self.config.inverted_index.apply_on_query.disabled())