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| // 某个用户在某个时刻浏览了某个商品,以及商品的价值 // eventTime: 北京时间,方便测试。如下,乱序数据: {"userID": "user_5", "eventTime": "2019-12-01 10:02:00", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_4", "eventTime": "2019-12-01 10:02:02", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_5", "eventTime": "2019-12-01 10:02:06", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_4", "eventTime": "2019-12-01 10:02:10", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_5", "eventTime": "2019-12-01 10:02:06", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_5", "eventTime": "2019-12-01 10:02:06", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_4", "eventTime": "2019-12-01 10:02:12", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_5", "eventTime": "2019-12-01 10:02:06", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_5", "eventTime": "2019-12-01 10:02:06", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_4", "eventTime": "2019-12-01 10:02:15", "eventType": "browse", "productID": "product_5", "productPrice": 20} {"userID": "user_4", "eventTime": "2019-12-01 10:02:16", "eventType": "browse", "productID": "product_5", "productPrice": 20}
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