sync starter code with refsol on MergeIterator

Signed-off-by: Alex Chi <iskyzh@gmail.com>
2024-02-05 12:49:07 +08:00
parent c19ab5b18d
commit fcb01d4704
1 changed files with 1 additions and 1 deletions
--- a/mini-lsm-starter/src/iterators/merge_iterator.rs
+++ b/mini-lsm-starter/src/iterators/merge_iterator.rs
@@ -42,7 +42,7 @@ impl<I: StorageIterator> Ord for HeapWrapper<I> {
 /// iterators, perfer the one with smaller index.
 pub struct MergeIterator<I: StorageIterator> {
    iters: BinaryHeap<HeapWrapper<I>>,
-    current: HeapWrapper<I>,
+    current: Option<HeapWrapper<I>>,
 }

 impl<I: StorageIterator> MergeIterator<I> {