title: Kafka Mongodb sink connector - update document
body: <p>we have been working on kafka ecosystem. let me go through the flow </p>
  
  <p><strong>Source(SQLServer) -> Debezium(CDC) -> Kafka Broker -> Kafka Stream(Processing, joins etc) -> Mongo connector -> Mongo DB</strong></p>
  
  <p>Now we are in last step, we are inserting processed data into mongo dB but now we have requirement to upsert data instead just insert.</p>
  
  <p>Can we get upsert(insert/update) functionality from mongo sink connector. as for now I understand it cant be done. </p>