xudong963 commented on code in PR #15379:
URL: https://github.com/apache/datafusion/pull/15379#discussion_r2009743629
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datafusion/datasource/src/file_groups.rs:
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@@ -354,6 +361,115 @@ impl FileGroupPartitioner {
}
}
+/// Represents a group of partitioned files that'll be processed by a single
thread.
+/// Maintains optional statistics across all files in the group.
+#[derive(Debug, Clone)]
+pub struct FileGroup {
+ /// The files in this group
+ pub files: Vec<PartitionedFile>,
+ /// Optional statistics for all files in the group
+ pub statistics: Option<Statistics>,
Review Comment:
We can compute the `statistics` in the method of `ListingTable`
https://github.com/apache/datafusion/blob/5210a2bac32e43dc7bf6e7e6000cdeaf2833c06e/datafusion/core/src/datasource/listing/table.rs#L1086-L1091
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