fix(bloom-filter): skip applying for non-indexed columns (GreptimeTeam#5246)

Signed-off-by: Zhenchi <[email protected]>

Author: zhongzc

src/mito2/src/cache/index/bloom_filter_index.rs

@@ -61,7 +61,7 @@ fn bloom_filter_index_content_weight((k, _): &((FileId, ColumnId), PageKey), v:
 pub struct CachedBloomFilterIndexBlobReader<R> {
     file_id: FileId,
     column_id: ColumnId,
-    file_size: u64,
+    blob_size: u64,
     inner: R,
     cache: BloomFilterIndexCacheRef,
 }
@@ -71,14 +71,14 @@ impl<R> CachedBloomFilterIndexBlobReader<R> {
     pub fn new(
         file_id: FileId,
         column_id: ColumnId,
-        file_size: u64,
+        blob_size: u64,
         inner: R,
         cache: BloomFilterIndexCacheRef,
     ) -> Self {
         Self {
             file_id,
             column_id,
-            file_size,
+            blob_size,
             inner,
             cache,
         }
@@ -92,7 +92,7 @@ impl<R: BloomFilterReader + Send> BloomFilterReader for CachedBloomFilterIndexBl
         self.cache
             .get_or_load(
                 (self.file_id, self.column_id),
-                self.file_size,
+                self.blob_size,
                 offset,
                 size,
                 move |ranges| async move { inner.read_vec(&ranges).await },

src/mito2/src/cache/index/inverted_index.rs

@@ -58,17 +58,17 @@ fn inverted_index_content_weight((k, _): &(FileId, PageKey), v: &Bytes) -> u32 {
 /// Inverted index blob reader with cache.
 pub struct CachedInvertedIndexBlobReader<R> {
     file_id: FileId,
-    file_size: u64,
+    blob_size: u64,
     inner: R,
     cache: InvertedIndexCacheRef,
 }
 
 impl<R> CachedInvertedIndexBlobReader<R> {
     /// Creates a new inverted index blob reader with cache.
-    pub fn new(file_id: FileId, file_size: u64, inner: R, cache: InvertedIndexCacheRef) -> Self {
+    pub fn new(file_id: FileId, blob_size: u64, inner: R, cache: InvertedIndexCacheRef) -> Self {
         Self {
             file_id,
-            file_size,
+            blob_size,
             inner,
             cache,
         }
@@ -82,7 +82,7 @@ impl<R: InvertedIndexReader> InvertedIndexReader for CachedInvertedIndexBlobRead
         self.cache
             .get_or_load(
                 self.file_id,
-                self.file_size,
+                self.blob_size,
                 offset,
                 size,
                 move |ranges| async move { inner.read_vec(&ranges).await },

src/mito2/src/sst/index/bloom_filter/applier.rs

@@ -33,18 +33,18 @@ use snafu::{OptionExt, ResultExt};
 use store_api::metadata::RegionMetadata;
 use store_api::storage::{ColumnId, RegionId};
 
-use super::INDEX_BLOB_TYPE;
 use crate::cache::file_cache::{FileCacheRef, FileType, IndexKey};
 use crate::cache::index::bloom_filter_index::{
     BloomFilterIndexCacheRef, CachedBloomFilterIndexBlobReader,
 };
 use crate::error::{
-    ApplyBloomFilterIndexSnafu, ColumnNotFoundSnafu, ConvertValueSnafu, MetadataSnafu,
+    ApplyBloomFilterIndexSnafu, ColumnNotFoundSnafu, ConvertValueSnafu, Error, MetadataSnafu,
     PuffinBuildReaderSnafu, PuffinReadBlobSnafu, Result,
 };
 use crate::metrics::INDEX_APPLY_ELAPSED;
 use crate::row_converter::SortField;
 use crate::sst::file::FileId;
+use crate::sst::index::bloom_filter::INDEX_BLOB_TYPE;
 use crate::sst::index::codec::IndexValueCodec;
 use crate::sst::index::puffin_manager::{BlobReader, PuffinManagerFactory};
 use crate::sst::index::TYPE_BLOOM_FILTER_INDEX;
@@ -118,28 +118,21 @@ impl BloomFilterIndexApplier {
             .start_timer();
 
         for (column_id, predicates) in &self.filters {
-            let mut blob = match self.cached_blob_reader(file_id, *column_id).await {
-                Ok(Some(puffin_reader)) => puffin_reader,
-                other => {
-                    if let Err(err) = other {
-                        warn!(err; "An unexpected error occurred while reading the cached index file. Fallback to remote index file.")
-                    }
-                    self.remote_blob_reader(file_id, *column_id, file_size_hint)
-                        .await?
-                }
+            let mut blob = match self
+                .blob_reader(file_id, *column_id, file_size_hint)
+                .await?
+            {
+                Some(blob) => blob,
+                None => continue,
             };
 
             // Create appropriate reader based on whether we have caching enabled
             if let Some(bloom_filter_cache) = &self.bloom_filter_index_cache {
-                let file_size = if let Some(file_size) = file_size_hint {
-                    file_size
-                } else {
-                    blob.metadata().await.context(MetadataSnafu)?.content_length
-                };
+                let blob_size = blob.metadata().await.context(MetadataSnafu)?.content_length;
                 let reader = CachedBloomFilterIndexBlobReader::new(
                     file_id,
                     *column_id,
-                    file_size,
+                    blob_size,
                     BloomFilterReaderImpl::new(blob),
                     bloom_filter_cache.clone(),
                 );
@@ -157,6 +150,43 @@ impl BloomFilterIndexApplier {
         Ok(())
     }
 
+    /// Creates a blob reader from the cached or remote index file.
+    ///
+    /// Returus `None` if the column does not have an index.
+    async fn blob_reader(
+        &self,
+        file_id: FileId,
+        column_id: ColumnId,
+        file_size_hint: Option<u64>,
+    ) -> Result<Option<BlobReader>> {
+        let reader = match self.cached_blob_reader(file_id, column_id).await {
+            Ok(Some(puffin_reader)) => puffin_reader,
+            other => {
+                if let Err(err) = other {
+                    // Blob not found means no index for this column
+                    if is_blob_not_found(&err) {
+                        return Ok(None);
+                    }
+                    warn!(err; "An unexpected error occurred while reading the cached index file. Fallback to remote index file.")
+                }
+                let res = self
+                    .remote_blob_reader(file_id, column_id, file_size_hint)
+                    .await;
+                if let Err(err) = res {
+                    // Blob not found means no index for this column
+                    if is_blob_not_found(&err) {
+                        return Ok(None);
+                    }
+                    return Err(err);
+                }
+
+                res?
+            }
+        };
+
+        Ok(Some(reader))
+    }
+
     /// Creates a blob reader from the cached index file
     async fn cached_blob_reader(
         &self,
@@ -242,6 +272,16 @@ impl BloomFilterIndexApplier {
     }
 }
 
+fn is_blob_not_found(err: &Error) -> bool {
+    matches!(
+        err,
+        Error::PuffinBuildReader {
+            source: puffin::error::Error::BlobNotFound { .. },
+            ..
+        }
+    )
+}
+
 pub struct BloomFilterIndexApplierBuilder<'a> {
     region_dir: String,
     object_store: ObjectStore,

src/mito2/src/sst/index/inverted_index/applier.rs

@@ -137,14 +137,10 @@ impl InvertedIndexApplier {
         };
 
         if let Some(index_cache) = &self.inverted_index_cache {
-            let file_size = if let Some(file_size) = file_size_hint {
-                file_size
-            } else {
-                blob.metadata().await.context(MetadataSnafu)?.content_length
-            };
+            let blob_size = blob.metadata().await.context(MetadataSnafu)?.content_length;
             let mut index_reader = CachedInvertedIndexBlobReader::new(
                 file_id,
-                file_size,
+                blob_size,
                 InvertedIndexBlobReader::new(blob),
                 index_cache.clone(),
             );