Fix bug (#3099)

* Fix Block Format Read bug
Signed-off-by: Nfishpenguin <kun.yu@zilliz.com>

* Fix Search crash bug
Signed-off-by: Nfishpenguin <kun.yu@zilliz.com>

core/src/db/DBImpl.cpp

@@ -619,12 +619,16 @@ DBImpl::Query(const server::ContextPtr& context, const query::QueryPtr& query_pt
         return job->status();
     }
 
-    result = job->query_result();
+    if (job->query_result()) {
+        result = job->query_result();
+    }
 
     // step 4: get entities by result ids
     std::vector<bool> valid_row;
-    STATUS_CHECK(GetEntityByID(query_ptr->collection_id, result->result_ids_, query_ptr->field_names, valid_row,
-                               result->data_chunk_));
+    if (!query_ptr->field_names.empty()) {
+        STATUS_CHECK(GetEntityByID(query_ptr->collection_id, result->result_ids_, query_ptr->field_names, valid_row,
+                                   result->data_chunk_));
+    }
 
     // step 5: filter entities by field names
     //    std::vector<engine::AttrsData> filter_attrs;

core/src/server/ValidationUtil.cpp

@@ -165,7 +165,7 @@ Status
 ValidateIndexType(const std::string& index_type) {
     // Index name shouldn't be empty.
     if (index_type.empty()) {
-        std::string msg = "Index name should not be empty.";
+        std::string msg = "Index type should not be empty.";
         LOG_SERVER_ERROR_ << msg;
         return Status(SERVER_INVALID_FIELD_NAME, msg);
     }
@@ -187,7 +187,7 @@ ValidateIndexType(const std::string& index_type) {
     };
 
     if (s_valid_index_names.find(index_type) == s_valid_index_names.end()) {
-        std::string msg = "Invalid index name: " + index_type;
+        std::string msg = "Invalid index type: " + index_type;
         LOG_SERVER_ERROR_ << msg;
         return Status(SERVER_INVALID_INDEX_TYPE, msg);
     }

core/src/server/delivery/request/CreateIndexReq.cpp

@@ -53,8 +53,6 @@ CreateIndexReq::OnExecute() {
 
         STATUS_CHECK(ValidateFieldName(field_name_));
 
-        STATUS_CHECK(ValidateIndexType(index_name_));
-
         // only process root collection, ignore partition collection
         engine::snapshot::CollectionPtr collection;
         engine::snapshot::FieldElementMappings fields_schema;