tispark的写入速度很慢,如何提升?

CREATE TABLE store_sales (
ss_sold_date_sk INT,
ss_sold_time_sk INT,
ss_item_sk INT,
ss_customer_sk INT,
ss_cdemo_sk INT,
ss_hdemo_sk INT,
ss_addr_sk INT,
ss_store_sk INT,
ss_promo_sk INT,
ss_ticket_number BIGINT,
ss_quantity INT,
ss_wholesale_cost DECIMAL(10,2),
ss_list_price DECIMAL(10,2),
ss_sales_price DECIMAL(10,2),
ss_ext_discount_amt DECIMAL(10,2),
ss_ext_sales_price DECIMAL(10,2),
ss_ext_wholesale_cost DECIMAL(10,2),
ss_ext_list_price DECIMAL(10,2),
ss_ext_tax DECIMAL(10,2),
ss_coupon_amt DECIMAL(10,2),
ss_net_paid DECIMAL(10,2),
ss_net_paid_inc_tax DECIMAL(10,2),
ss_net_profit DECIMAL(10,2)
);