From ba86c1663d9282031a676d6c55bda6ac40bee8d9 Mon Sep 17 00:00:00 2001
From: ZeFeng Yin <yinzefeng.yzf@alibaba-inc.com>
Date: Tue, 10 Mar 2026 16:09:37 +0800
Subject: [PATCH] fix: add validator for cosine metric with int8 (#209)

---
 src/db/index/common/schema.cc | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/db/index/common/schema.cc b/src/db/index/common/schema.cc
index 02789c6..1f74353 100644
--- a/src/db/index/common/schema.cc
+++ b/src/db/index/common/schema.cc
@@ -160,6 +160,16 @@ Status FieldSchema::validate() const {
               "types according to the IP metric");
         }
       }
+      if (vector_index_params->metric_type() == MetricType::COSINE) {
+        if (data_type_ != DataType::VECTOR_FP16 &&
+            data_type_ != DataType::VECTOR_FP32) {
+          return Status::InvalidArgument(
+              "schema validate failed: cosine metric only supports FP32/FP16 "
+              "data types, but field[",
+              name_, "]'s data type is ",
+              DataTypeCodeBook::AsString(data_type_));
+        }
+      }
     }
   } else {
     if (index_params_) {