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[DISCUSSION] Support alter schema for complex types

Posted by akshay_nuthala on Mar 18, 2021; 4:30pm
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/DISCUSSION-Support-alter-schema-for-complex-types-tp107022.html

Hi everyone,

Currently carbon only supports altering schema for primitive types.
We can extend it to complex columns too -
1) alter add complex column(array/struct)
2) alter drop complex column(array/struct)
3) alter change datatype/rename complex column(array/struct)

Here phase-1 focuses only on non-nested complex columns.
Phase-2 will later target nested ones.

Please let me know your valid inputs about the same.
Following is the link to the design document.

https://docs.google.com/document/d/1DhhkVXM8rMvOuKDZeccJpFEfO3VkA9C0c7JHCV88NXI/edit

Thanks,
Akshay




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