bhasudha commented on pull request #4097:
URL: https://github.com/apache/hudi/pull/4097#issuecomment-979646765
For AWSDmsTransformer the config that needs to be set is
`--transformer-class org.apache.hudi.utilities.transform.AWSDmsTransformer` .
For chaining multiple transformer pass comma seperated transformers to the
config `--transformer-class` like below.
```
--transformer-class
org.apache.hudi.utilities.transform.FlatteningTransformer,org.apache.hudi.utilities.transform.SqlQueryBasedTransformer
--hoodie-conf hoodie.deltastreamer.transformer.sql=SELECT a.col1, a.col3,
a.col4 FROM <SRC> a
```
The above config first flattens the incoming records and then does sql
projection based on the query specified.
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