alamb commented on code in PR #16971:
URL: https://github.com/apache/datafusion/pull/16971#discussion_r2246439244
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datafusion/execution/src/cache/cache_manager.rs:
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@@ -86,6 +114,10 @@ pub struct CacheManagerConfig {
/// location.
/// Default is disable.
pub list_files_cache: Option<ListFilesCache>,
+ /// Cache of file-embedded metadata, used to avoid reading it multiple
times when processing a
+ /// data file (e.g., Parquet footer and page metadata).
+ /// If not provided, the [`CacheManager`] will create a
[`DefaultFilesMetadataCache`].
+ pub file_metadata_cache: Option<FileMetadataCache>,
Review Comment:
Ah, I understand this now and it makes sense
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