eldenmoon commented on code in PR #26749:
URL: https://github.com/apache/doris/pull/26749#discussion_r1405587875


##########
be/src/olap/rowset/segment_v2/inverted_index_desc.cpp:
##########
@@ -27,30 +27,32 @@ const std::string segment_suffix = ".dat";
 const std::string index_suffix = ".idx";
 const std::string index_name_separator = "_";
 
-std::string InvertedIndexDescriptor::get_temporary_index_path(const 
std::string& segment_path,
-                                                              uint32_t uuid) {
+std::string InvertedIndexDescriptor::get_temporary_index_path(
+        const std::string& segment_path, uint32_t uuid, const std::string& 
index_suffix_path) {
     return StripSuffixString(segment_path, segment_suffix) + 
index_name_separator +
-           std::to_string(uuid);
+           std::to_string(uuid) + index_suffix_path;
 }
 
 std::string InvertedIndexDescriptor::get_index_file_name(const std::string& 
segment_path,
-                                                         uint32_t uuid) {
+                                                         uint32_t uuid,
+                                                         const std::string& 
index_suffix_path) {
     return StripSuffixString(segment_path, segment_suffix) + 
index_name_separator +
-           std::to_string(uuid) + index_suffix;
+           std::to_string(uuid) + index_suffix_path + index_suffix;

Review Comment:
   i don't think it's safe to add `_` since some logic rely on the format to 
parse tablet_id, index_id, ...etc. So i would rather use anthother speator like 
`$`



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