amogh-jahagirdar commented on code in PR #2667:
URL: https://github.com/apache/iceberg-rust/pull/2667#discussion_r3462242769
##########
crates/iceberg/src/transaction/expire_snapshots.rs:
##########
@@ -321,6 +321,26 @@ impl TransactionAction for ExpireSnapshotsAction {
.into_iter()
.map(|ref_name| TableUpdate::RemoveSnapshotRef { ref_name })
.collect();
+
+ // Drop the statistics metadata tied to each expired snapshot,
mirroring Java
+ // `RemoveSnapshots.removeSnapshots`. This only rewrites metadata; the
puffin files those
+ // entries point at are deleted by the higher-level file-cleanup
maintenance operation.
+ for snapshot_id in &plan.ids_to_remove {
Review Comment:
Minor: I think the following is a more idiomatic way:
```
for &snapshot_id in &plan.ids_to_remove {
updates.extend(
metadata
.statistics_for_snapshot(snapshot_id)
.is_some()
.then_some(TableUpdate::RemoveStatistics { snapshot_id }),
);
updates.extend(
metadata
.partition_statistics_for_snapshot(snapshot_id)
.is_some()
.then_some(TableUpdate::RemovePartitionStatistics { snapshot_id
}),
);
}
```
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