spark写入doris

1.获取kafka数据，直接写入doris的主键表
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2.获取kafka数据，统计用户点击数，写入doris的主键表
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通过doris.sync.write.upsert.sql来实现
PROPERTIES (
"replication_allocation" = "tag.location.default: 3",
-- 核心配置：指定Upsert更新规则，实现旧值+新值（全局累积的关键）
"doris.sync.write.upsert.sql" = "INSERT INTO stream_db.user_click_global_sum (user_id, total_click) VALUES (?, ?) ON DUPLICATE KEY UPDATE total_click = total_click + VALUES(total_click)"
);