Add TODOs

src/blobstore/implementations/onblocks/datanodestore/DataNodeStore.cpp

@@ -97,6 +97,7 @@ uint64_t DataNodeStore::estimateSpaceForNumNodesLeft() const {
 }
 
 void DataNodeStore::removeSubtree(unique_ref<DataNode> node) {
+  //TODO Make this faster by not loading the leaves but just deleting them. Can be recognized, because of the depth of their parents.
   DataInnerNode *inner = dynamic_cast<DataInnerNode*>(node.get());
   if (inner != nullptr) {
     for (uint32_t i = 0; i < inner->numChildren(); ++i) {

src/blockstore/implementations/ondisk/OnDiskBlockStore.h

@@ -16,6 +16,7 @@ public:
 
   boost::optional<cpputils::unique_ref<Block>> tryCreate(const Key &key, cpputils::Data data) override;
   boost::optional<cpputils::unique_ref<Block>> load(const Key &key) override;
+  //TODO Can we make this faster by allowing to delete blocks by only having theiy Key? So we wouldn't have to load it first?
   void remove(cpputils::unique_ref<Block> block) override;
   uint64_t numBlocks() const override;
   uint64_t estimateNumFreeBytes() const override;