lakshmi-manasa-g commented on pull request #1364:
URL: https://github.com/apache/samza/pull/1364#issuecomment-631523597
yes, generator may have additional metadata.
it is for two reasons that it was designed this way.
1. to let users have full control over what their k-v pairs should look like
- we only give the value but the key is decided by the users (aka generator).
For example the streamName maybe used to form a k-v pair:
"table":"_source_streamName_table" to help with ingestion.
2. to let users add more k-v pairs if they need to. for example,
"dataFormat":"avro" for which users do not need an input from the system
producer
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