feat: sort fields by column id

GreptimeTeam · Aug 15, 2023 · c619a17 · c619a17
1 parent bbcf8ee
commit c619a17
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/mito2/src/read.rs b/src/mito2/src/read.rs
@@ -47,6 +47,9 @@ pub struct Batch {
     /// UInt8 type, not null.
     op_types: Arc<UInt8Vector>,
     /// Fields organized in columnar format.
+    ///
+    /// Fields are ordered by their column id so the batch after projection
+    /// is always consistent.
     fields: Vec<BatchColumn>,
 }
 
@@ -261,6 +264,8 @@ impl BatchBuilder {
                 }
             );
         }
+        // Sort fields by column id.
+        self.fields.sort_unstable_by_key(|field| field.column_id);
 
         Ok(Batch {
             primary_key: self.primary_key,