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GDPR has made deletes a must-have tool in everyone's data management toolbox. Hudi supports both soft and hard deletes. For details on how to actually perform them, see here.

Does deleted records appear in Hudi's incremental query results ?

Soft Deletes (unlike hard deletes) do appear in the incremental pull query results. So, if you need a mechanism to propagate deletes to downstream tables, you can use Soft deletes.

How do I migrate my data to Hudi

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For merge on read table, you may want to also try scheduling and running compaction jobs. You can run compaction directly using spark submit on org.apache.hudi.utilities.HoodieCompactor or by using HUDI CLI

If I keep my file versions at 1, with this configuration will i be able to do a roll back (to the last commit) when write fail?

Yes, Commits happen before cleaning. Any failed commits will not cause any side-effects and Hudi will guarantee snapshot isolation.

Does AWS GLUE  support Hudi ?

AWS Glue does not have official support for Hudi. So you may possibly hit runtime issues which you would have to workaround by yourself. Please look at #1977 for more context.

Contributing to FAQ 

A good and usable FAQ should be community-driven and crowd source questions/thoughts across everyone. 

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