From b31e9bea26c098750dece8fb38eb2f57d6c254b5 Mon Sep 17 00:00:00 2001
From: Tamo <tamo@meilisearch.com>
Date: Tue, 24 Sep 2024 16:33:17 +0200
Subject: [PATCH] while retrieving the readers on an arroywrapper, stops at the
 first empty reader

---
 milli/src/vector/mod.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/milli/src/vector/mod.rs b/milli/src/vector/mod.rs
index d5b80db83..b6d6510af 100644
--- a/milli/src/vector/mod.rs
+++ b/milli/src/vector/mod.rs
@@ -56,7 +56,11 @@ impl ArroyWrapper {
     ) -> impl Iterator<Item = Result<arroy::Reader<D>, arroy::Error>> + 'a {
         arroy_db_range_for_embedder(self.embedder_index).map_while(move |index| {
             match arroy::Reader::open(rtxn, index, db) {
-                Ok(reader) => Some(Ok(reader)),
+                Ok(reader) => match reader.is_empty(rtxn) {
+                    Ok(false) => Some(Ok(reader)),
+                    Ok(true) => None,
+                    Err(e) => Some(Err(e)),
+                },
                 Err(arroy::Error::MissingMetadata(_)) => None,
                 Err(e) => Some(Err(e)),
             }