dracoooooo commented on code in PR #1566:
URL: https://github.com/apache/horaedb/pull/1566#discussion_r1757289636
##########
src/wal/src/local_storage_impl/segment.rs:
##########
@@ -454,6 +516,89 @@ impl SegmentManager {
}
Ok(())
}
+
+ pub fn mark_delete_entries_up_to(
+ &self,
+ location: WalLocation,
+ sequence_num: SequenceNumber,
+ ) -> Result<()> {
+ let current_segment_id =
self.current_segment.lock().unwrap().lock().unwrap().id;
+ let mut all_segments = self.all_segments.lock().unwrap();
+ let mut segments_to_remove = Vec::new();
+
+ for (_, segment) in all_segments.iter() {
+ let mut guard = segment.lock().unwrap();
+
+ guard.mark_deleted(location.table_id, sequence_num);
+
+ // Delete this segment if it is empty
+ if guard.is_empty() && guard.id != current_segment_id {
+ let mut cache = self.cache.lock().unwrap();
+
+ // Check if segment is already in cache
+ if let Some(index) = cache.iter().position(|(id, _)| *id ==
guard.id) {
+ cache.remove(index);
+ }
+
+ segments_to_remove.push((guard.id, segment.clone()));
+ }
+ }
+
+ // Delete segments in all_segments
+ for (segment_id, _) in segments_to_remove.iter() {
Review Comment:
`segments_to_remove` is `Vec<(u64, Arc<...>)>`, so there is no `keys()` for
this type. Do I need to change it to a hashmap?
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