mysql have table t(a Int, b Int), 2 records: (1,1) and (2, 2), then in ck count
`select count(1) from ckdb.t ` -- 2, that's ok.
then, mysql  delete (2,2) and ck count
`select count(1) from ckdb.t ` -- still 2, that's not correct .
{
        String byte_buffer;
        byte_buffer.resize(bitmap_size);
        payload.readStrict(reinterpret_cast<char *>(byte_buffer.data()), bitmap_size);
        bitmap.resize(bitmap_size * 8, false);
        for (size_t i = 0; i < bitmap_size; ++i)
        {
            uint8_t tmp = byte_buffer[i];
            boost::dynamic_bitset<>::size_type bit = i * 8;
            if (tmp == 0)
                continue;
            if ((tmp & 0x01) != 0)
                bitmap.set(bit);
            if ((tmp & 0x02) != 0)
                bitmap.set(bit + 1);
            if ((tmp & 0x04) != 0)
                bitmap.set(bit + 2);
            if ((tmp & 0x08) != 0)
                bitmap.set(bit + 3);
            if ((tmp & 0x10) != 0)
                bitmap.set(bit + 4);
            if ((tmp & 0x20) != 0)
                bitmap.set(bit + 5);
            if ((tmp & 0x40) != 0)
                bitmap.set(bit + 6);
            if ((tmp & 0x80) != 0)
                bitmap.set(bit + 7);
        }
    }
    class EventBase;