[HUDI-5599] Make sure that non-string primary-keys are supported

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Won't Fix
• Fix Version/s: 1.0.0-beta1
• Component/s: writer-core
• Epic Link: 1.X Format Changes
• Assignee: Unassigned
• Reporter: Alexey Kudinkin
• Created: 23/Jan/23 18:09
• Updated: 07/Sep/23 11:12
• Resolved: 07/Sep/23 11:12

Description

Original issue reported:

https://github.com/apache/hudi/issues/7628

 

Currently, Hudi has a very strong bias t/w assuming that record-keys are of type string. This, however, doesn't have to be the case.

 

We need to holistically review the writing core code-paths and make sure that there's no assumption made relative to particular type of the column of the primary-key. 

Few caveats

1. It will be a challenge to support non-string composite keys in an engine-agnostic manner, so we can start initially w/ just the support for simple keys