fix: panic when field id doesn't equal to field index (#2116)

Signed-off-by: BubbleCal <bubble-cal@outlook.com>

Cargo.lock

@@ -3966,7 +3966,7 @@ dependencies = [
 
 [[package]]
 name = "lancedb"
-version = "0.16.1-beta.0"
+version = "0.16.1-beta.1"
 dependencies = [
  "arrow",
  "arrow-array",
@@ -4050,7 +4050,7 @@ dependencies = [
 
 [[package]]
 name = "lancedb-node"
-version = "0.16.1-beta.0"
+version = "0.16.1-beta.1"
 dependencies = [
  "arrow-array",
  "arrow-ipc",
@@ -4075,7 +4075,7 @@ dependencies = [
 
 [[package]]
 name = "lancedb-nodejs"
-version = "0.16.1-beta.0"
+version = "0.16.1-beta.1"
 dependencies = [
  "arrow-array",
  "arrow-ipc",
@@ -4093,7 +4093,7 @@ dependencies = [
 
 [[package]]
 name = "lancedb-python"
-version = "0.19.1-beta.0"
+version = "0.19.1-beta.1"
 dependencies = [
  "arrow",
  "env_logger",

rust/lancedb/src/index/vector.rs

@@ -23,7 +23,19 @@ impl VectorIndex {
         let fields = index
             .fields
             .iter()
-            .map(|i| manifest.schema.fields[*i as usize].name.clone())
+            .map(|field_id| {
+                manifest
+                    .schema
+                    .field_by_id(*field_id)
+                    .unwrap_or_else(|| {
+                        panic!(
+                            "field {field_id} of index {} must exist in schema",
+                            index.name
+                        )
+                    })
+                    .name
+                    .clone()
+            })
             .collect();
         Self {
             columns: fields,