Some queries as a newbie

Hi Team,

Thanks in advance.
I’m new to Druid. I have few doubts, can you please help me with the solution.

  1. I’m using Kafka ingestion, Is it possible to re ingest from the particular kafka offset?
  2. How to reingest in kafka indexing(do I need to drop and reindex)? Got the docs for file storage though but not sure about the kafka one.
  3. What would happen in the use case where I am using kafka ingestion and want to add some more dimensions, would it append to existing datasource/Segments. Is there any configuration for same.

Thanks & Regards,
Kuldeep Gaur

Welcome to Druid! Please let us know how we can help you on your journey!

  1. I’m using Kafka ingestion, Is it possible to re ingest from the particular kafka offset?
    Yes.

https://druid.apache.org/docs/latest/development/extensions-core/kafka-ingestion.html

  1. How to reingest in kafka indexing(do I need to drop and reindex)? Got the docs for file storage though but not sure about the kafka one.

Depends on what type of reingestion you want to do. What are you trying to accomplish?

https://druid.apache.org/docs/latest/tutorials/tutorial-update-data.html

  1. What would happen in the use case where I am using kafka ingestion and want to add some more dimensions, would it append to existing datasource/Segments. Is there any configuration for same.

Check out useFieldDiscovery in your ingestion spec to make sure new columns are appended.

Thanks a lot Rachel.