xudong963 commented on code in PR #16213:
URL: https://github.com/apache/datafusion/pull/16213#discussion_r2123103628
##########
datafusion/common/src/pruning.rs:
##########
@@ -258,7 +261,16 @@ impl PruningStatistics for PartitionPruningStatistics {
}
/// Prune a set of containers represented by their statistics.
-/// Each [`Statistics`] represents a container (e.g. a file or a partition of
files).
+///
+/// Each [`Statistics`] represents a "container" -- some collection of data
+/// that has statistics of its columns.
+///
+/// It is up to the caller to decide what each container represents. For
+/// example, they can come from a file (e.g. [`PartitionedFile`]) or a set of
of
+/// files (e.g. [`FileGroup`])
+///
+/// [`PartitionedFile`]:
https://docs.rs/datafusion/latest/datafusion/datasource/listing/struct.PartitionedFile.html
+/// [`FileGroup`]:
https://docs.rs/datafusion/latest/datafusion/datasource/physical_plan/struct.FileGroup.html
Review Comment:
Nice!
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