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Hi, If you look at section CdcInsertsOnly of https://docs.aws.amazon.com/dms/latest/APIReference/API_S3Settings.html, it clearly says that UPDATEs, INSERTs and DELETEs are reported in parquet files with one row per change.
By default (the false setting), the first field in a .csv or .parquet record contains
the letter I (INSERT), U (UPDATE), or D (DELETE). These values indicate whether
the row was inserted, updated, or deleted at the source database for a CDC load
to the target.
So, all changes are clearly reported.
I personally use not with Parquet but CSV files and it works fine.
Best, Didier
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