diff --git a/rust/blockstore/src/types/writer.rs b/rust/blockstore/src/types/writer.rs
index 6862c17f20e..f956e089a74 100644
--- a/rust/blockstore/src/types/writer.rs
+++ b/rust/blockstore/src/types/writer.rs
@@ -87,12 +87,13 @@ impl BlockfileWriter {
         &self,
         prefix: &str,
         key: K,
-    ) -> Result<Option<V::OwnedReadableValue>, Box<dyn ChromaError>> {
+    ) -> Result<Option<V::PreparedValue>, Box<dyn ChromaError>> {
         match self {
             BlockfileWriter::MemoryBlockfileWriter(_) => todo!(),
-            BlockfileWriter::ArrowBlockfileWriter(writer) => {
+            BlockfileWriter::ArrowUnorderedBlockfileWriter(writer) => {
                 writer.get_clone::<K, V>(prefix, key).await
             }
+            BlockfileWriter::ArrowOrderedBlockfileWriter(_) => todo!(),
         }
     }
 
diff --git a/rust/index/src/spann/types.rs b/rust/index/src/spann/types.rs
index 3b57cda4453..0f8fa31c9ef 100644
--- a/rust/index/src/spann/types.rs
+++ b/rust/index/src/spann/types.rs
@@ -251,7 +251,7 @@ impl SpannIndexWriter {
         let max_head_id = match max_head_id_bf_id {
             Some(max_head_id_bf_id) => {
                 let reader = blockfile_provider
-                    .open::<&str, u32>(max_head_id_bf_id)
+                    .read::<&str, u32>(max_head_id_bf_id)
                     .await;
                 match reader {
                     Ok(reader) => reader.get("", MAX_HEAD_OFFSET_ID).await.map_err(|_| {