1 .Apache Kafka x Apache Flink· 

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6 . Yarn Kafka HDFS Mysql Hadoop Spark Tidb Hbase ES Flink Kafka 

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14 . PROCESS SINK MYSQL LOG KAFKA SOURCE DB MQ FLINK ES DATA HDFS 

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19 .{"id":1,"stu":123,"status":"book"} (true,123,1) ---------- INSERT {"id":2,"stu":123,"status":"book"} {"id":1,"stu":123,"status":"finish"} (false,123,1) ---------- DELETE UPDATE {"id":2,"stu":123,"status":"finish"} (true,123,2) ---------- INSERT 

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22 .{"id":1,"stu":123,"status":"book"} (true,123,1) ---------- INSERT {"id":2,"stu":123,"status":"book"} {"id":1,"stu":123,"status":"finish"} {"id":2,"stu":123,"status":"finish"} (false,123,1) ---------- DELETE UPDATE (true,123,2) ---------- INSERT (false,123,2) ---------- DELETE (true,123,1) ---------- INSERT UPDATE (false,123,1) ---------- DELETE DELETE 

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