protected static final String _DOC = "_doc";

    protected static final String[] timestampFields = { LAST_MODIFIED, CREATE_TIME };

    protected static final HashFunction murmur3Hash = Hashing.murmur3_128(0);

    @Resource
    protected volatile FesenClient fesenClient;

    protected String index;

    protected int scrollTimeout = 60000;

    protected int scrollSize = 100;