presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/SemiTransactionalHiveMetastore.java/SemiTransactionalHiveMetastore/isDirectoryNoLongerExists
class SemiTransactionalHiveMetastore:        public boolean isDirectoryNoLongerExists()
        {
            return directoryNoLongerExists;
        }