Function checkUnsupportedVersion

src/Interpreters/loadMetadata.cpp:138–147

}

static void checkUnsupportedVersion(ContextMutablePtr, const String & database_name)
{
    auto default_db_disk = Context::getGlobalContextInstance()->getDatabaseDisk();
    /// Produce better exception message
    auto metadata_dir_path = DatabaseCatalog::getMetadataDirPath(database_name);
    if (default_db_disk->existsDirectory(metadata_dir_path))
        throw Exception(ErrorCodes::NOT_IMPLEMENTED, "Data directory for {} database exists, but metadata file does not. "
                                                     "Probably you are trying to upgrade from version older than 20.7. "
                                                     "If so, you should upgrade through intermediate version.", database_name);
}

static void checkIncompleteOrdinaryToAtomicConversion(ContextPtr context, const std::map<String, fs::path> & databases)
{