lambda by default

Author: fulmicoton-dd

quickwit/quickwit-search/src/root.rs

@@ -752,6 +752,10 @@ pub(crate) async fn search_partial_hits_phase(
             && searcher_context.searcher_config.lambda.is_some()
         {
             // Execute via Lambda
+            info!(
+                num_splits = split_metadatas.len(),
+                "Starting lambda execution for leaf search"
+            );
             execute_leaf_search_via_lambda(
                 search_request,
                 indexes_metas_for_leaf_search,
@@ -861,7 +865,11 @@ async fn execute_leaf_search_via_lambda(
                 jobs_to_leaf_request(search_request, indexes_metas_for_leaf_search, batch_jobs);
             async move {
                 let leaf_request = request?;
-                lambda_invoker.invoke_leaf_search(leaf_request).await
+                let response = lambda_invoker.invoke_leaf_search(leaf_request).await;
+                if let Err(err) = &response {
+                    error!(error = %err, "Lambda invocation failed");
+                }
+                response
             }
         })
         .collect();

quickwit/quickwit-serve/src/elasticsearch_api/rest_handler.rs

@@ -412,7 +412,7 @@ fn build_request_for_es_api(
             search_after,
             count_hits,
             ignore_missing_indexes,
-            execution_mode: 0, // Default to gRPC
+            execution_mode: 1, // Default to Lambda (RemoteFunction)
         },
         has_doc_id_field,
     ))

quickwit/quickwit-serve/src/search_api/rest_handler.rs

@@ -265,7 +265,7 @@ pub fn search_request_from_api_request(
         search_after: None,
         count_hits: search_request.count_all.into(),
         ignore_missing_indexes: false,
-        execution_mode: 0, // Default to gRPC
+        execution_mode: 1, // Default to Lambda (RemoteFunction)
     };
     Ok(search_request)
 }