refactor: Set expected runtime config in error message when the used disk space during the spilling process has exceeded the allocation limit

datafusion/core/tests/memory_limit/mod.rs

@@ -602,10 +602,10 @@ async fn test_disk_spill_limit_reached() -> Result<()> {
         .await
         .unwrap();
 
-    let err = df.collect().await.unwrap_err();
-    assert_contains!(
-        err.to_string(),
-        "The used disk space during the spilling process has exceeded the allowable limit"
+    let error_message = df.collect().await.unwrap_err().to_string();
+    assert!(
+        error_message.contains("The used disk space during the spilling process has exceeded the allowable limit") &&
+            error_message.contains("datafusion.runtime.max_temp_directory_size"),
     );
 
     Ok(())

datafusion/execution/src/disk_manager.rs

@@ -420,7 +420,8 @@ impl RefCountedTempFile {
         let global_disk_usage = self.disk_manager.used_disk_space.load(Ordering::Relaxed);
         if global_disk_usage > self.disk_manager.max_temp_directory_size {
             return resources_err!(
-                "The used disk space during the spilling process has exceeded the allowable limit of {}. Try increasing the `max_temp_directory_size` in the disk manager configuration.",
+                "The used disk space during the spilling process has exceeded the allowable limit of {}. \
+                Please try increasing the config: `datafusion.runtime.max_temp_directory_size`.",
                 human_readable_size(self.disk_manager.max_temp_directory_size as usize)
             );
         }