And waits for them. That's pointless.
Coordination::Stat columns_stat_before, columns_stat_after;
            String columns_str;
            String checksums_str;
            
            
            if (!zookeeper->tryGet(fs::path(current_part_path) / "columns", columns_str, &columns_stat_before) ||
                !zookeeper->tryGet(fs::path(current_part_path) / "checksums", checksums_str) ||
                !zookeeper->exists(fs::path(current_part_path) / "columns", &columns_stat_after) ||
                columns_stat_before.version != columns_stat_after.version)
            {
                LOG_INFO(log, "Not checking checksums of part {} with replica {} because part changed while we were reading its checksums", part_name, replica);
                continue;
            }
            replica_part_header = ReplicatedMergeTreePartHeader::fromColumnsAndChecksumsZNodes(
                columns_str, checksums_str);
        }
        if (replica_part_header.getColumnsHash() != local_part_header.getColumnsHash())
        {
            LOG_INFO(log, "Not checking checksums of part {} with replica {} because columns are different", part_name, replica);
            continue;
        }
        replica_part_header.getChecksums().checkEqual(local_part_header.getChecksums(), true);
        if (replica == replica_name)
            has_been_already_added = true;
        
        
        if (absent_replicas_paths)
        {
            absent_replicas_paths->clear();
            break;