dataroaring commented on code in PR #53908:
URL: https://github.com/apache/doris/pull/53908#discussion_r2286856193


##########
be/src/cloud/cloud_meta_mgr.cpp:
##########
@@ -1384,15 +1690,108 @@ Status CloudMetaMgr::update_delete_bitmap(const 
CloudTablet& tablet, int64_t loc
     if (next_visible_version > 0) {
         req.set_next_visible_version(next_visible_version);
     }
-    for (auto& [key, bitmap] : delete_bitmap->delete_bitmap) {
-        req.add_rowset_ids(std::get<0>(key).to_string());
-        req.add_segment_ids(std::get<1>(key));
-        req.add_versions(std::get<2>(key));
-        // To save space, convert array and bitmap containers to run containers
-        bitmap.runOptimize();
-        std::string bitmap_data(bitmap.getSizeInBytes(), '\0');
-        bitmap.write(bitmap_data.data());
-        *(req.add_segment_delete_bitmaps()) = std::move(bitmap_data);
+
+    bool write_v1 =
+            config::delete_bitmap_store_version == 1 || 
config::delete_bitmap_store_version == 3;
+    bool write_v2 = config::delete_bitmap_store_version >= 2;
+    // write v1 kvs
+    if (write_v1) {
+        for (auto& [key, bitmap] : delete_bitmap->delete_bitmap) {
+            req.add_rowset_ids(std::get<0>(key).to_string());
+            req.add_segment_ids(std::get<1>(key));
+            req.add_versions(std::get<2>(key));
+            // To save space, convert array and bitmap containers to run 
containers
+            bitmap.runOptimize();
+            std::string bitmap_data(bitmap.getSizeInBytes(), '\0');
+            bitmap.write(bitmap_data.data());
+            *(req.add_segment_delete_bitmaps()) = std::move(bitmap_data);
+        }
+    }
+
+    // write v2 kvs
+    if (write_v2) {
+        // TODO skip update if delete bitmap is empty
+        //  it's ok for compaction and schema change, but for load, ms check 
partition version
+        auto add_delete_bitmap = [](DeleteBitmapPB& delete_bitmap_pb,
+                                    const DeleteBitmap::BitmapKey& key, 
roaring::Roaring& bitmap) {
+            delete_bitmap_pb.add_rowset_ids(std::get<0>(key).to_string());
+            delete_bitmap_pb.add_segment_ids(std::get<1>(key));
+            delete_bitmap_pb.add_versions(std::get<2>(key));
+            // To save space, convert array and bitmap containers to run 
containers
+            bitmap.runOptimize();
+            std::string bitmap_data(bitmap.getSizeInBytes(), '\0');
+            bitmap.write(bitmap_data.data());
+            *(delete_bitmap_pb.add_segment_delete_bitmaps()) = 
std::move(bitmap_data);
+        };
+        auto handle_rowset_delete_bitmap = [&](std::string& rowset_id,
+                                               DeleteBitmapPB& 
delete_bitmap_pb) {
+            std::stringstream ss;
+            DeleteBitmapStoragePB delete_bitmap_storage;
+            for (int i = 0; i < delete_bitmap_pb.rowset_ids_size(); i++) {
+                ss << "{rid=" << delete_bitmap_pb.rowset_ids(i)
+                   << ", sid=" << delete_bitmap_pb.segment_ids(i)
+                   << ", ver=" << delete_bitmap_pb.versions(i) << "}, ";
+            }
+            if (config::delete_bitmap_max_bytes_store_in_fdb >= 0 &&
+                delete_bitmap_pb.ByteSizeLong() > 
config::delete_bitmap_max_bytes_store_in_fdb) {
+                DeleteBitmapFileWriter file_writer(tablet.tablet_id(), 
rowset_id, storage_resource);
+                RETURN_IF_ERROR(file_writer.init());
+                RETURN_IF_ERROR(file_writer.write(delete_bitmap_pb));
+                RETURN_IF_ERROR(file_writer.close());
+                delete_bitmap_pb.Clear();
+                delete_bitmap_storage.set_store_in_fdb(false);
+            } else {
+                delete_bitmap_storage.set_store_in_fdb(true);
+                *(delete_bitmap_storage.mutable_delete_bitmap()) = 
std::move(delete_bitmap_pb);
+            }
+            LOG(INFO) << "handle one rowset delete bitmap for tablet_id: " << 
tablet.tablet_id()
+                      << ", rowset_id: " << rowset_id
+                      << ", delete_bitmap num: " << 
delete_bitmap_pb.rowset_ids_size()
+                      << ", store_in_fdb=" << 
delete_bitmap_storage.store_in_fdb()
+                      << ",  size: " << delete_bitmap_pb.ByteSizeLong() << ", 
keys=[" << ss.str()
+                      << "]";
+            req.add_v2_rowset_ids(rowset_id);
+            *(req.add_delete_bitmap_storages()) = 
std::move(delete_bitmap_storage);
+            return Status::OK();
+        };
+        req.set_store_version(2);
+        LOG(INFO) << "update delete bitmap for tablet_id: " << 
tablet.tablet_id()

Review Comment:
   should be controlled by already existed mow_debug config.



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