[HUDI-9132] Avoid empty string row key for delete and update operations #13071
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This PR refactors the code for config generation.
Change Logs
Refactor related code.
Impact
Better readability and more tests.
Risk level (write none, low medium or high below)
Low.
Documentation Update
Describe any necessary documentation update if there is any new feature, config, or user-facing change. If not, put "none".
ticket number here and follow the instruction to make
changes to the website.
Contributor's checklist