qrilka commented on code in PR #6526:
URL: https://github.com/apache/arrow-datafusion/pull/6526#discussion_r1224492778
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datafusion/core/src/physical_plan/file_format/mod.rs:
##########
@@ -287,41 +311,53 @@ struct FileGroupsDisplay<'a>(&'a [Vec<PartitionedFile>]);
impl<'a> Display for FileGroupsDisplay<'a> {
fn fmt(&self, f: &mut Formatter) -> FmtResult {
- let mut first_group = true;
- let groups = if self.0.len() == 1 { "group" } else { "groups" };
- write!(f, "{{{} {}: [", self.0.len(), groups)?;
+ let n_group = self.0.len();
+ let groups = if n_group == 1 { "group" } else { "groups" };
+ write!(f, "{{{n_group} {groups}: [")?;
// To avoid showing too many partitions
let max_groups = 5;
- for group in self.0.iter().take(max_groups) {
- if !first_group {
+ for (idx, group) in self.0.iter().take(max_groups).enumerate() {
+ if idx > 0 {
write!(f, ", ")?;
}
- first_group = false;
- write!(f, "[")?;
-
- let mut first_file = true;
- for pf in group {
- if !first_file {
- write!(f, ", ")?;
- }
- first_file = false;
-
- write!(f, "{}", pf.object_meta.location.as_ref())?;
-
- if let Some(range) = pf.range.as_ref() {
- write!(f, ":{}..{}", range.start, range.end)?;
- }
- }
- write!(f, "]")?;
+ write!(f, "{}", FileGroupDisplay(group))?;
}
- if self.0.len() > max_groups {
+ // Remaining elements are showed as `...` (to indicate there is more)
+ if n_group > max_groups {
write!(f, ", ...")?;
}
write!(f, "]}}")?;
Ok(())
}
}
+/// A wrapper to customize partitioned file display
+///
+/// Prints in the format:
+/// ```text
+/// [file1, file2,...]
Review Comment:
Will you have time to do this or I should try?
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