Hello, If I add a new column in “primaryKeyColumns” in schema, How much time it would take to create indexing for the new column ?

is this for upsert use case?

no

primaryKeyColumns is only for upsert use case. If you want to add other indexes, you can simply update the table config and invoke reloadSegments api

My table is Realtime table without upsert that means i can’t update primary index. Is it I have to re ingest the whole data again and create schema again

No, you dont have to

Just schma change and upload segemnts will work for me ?

not upload, its reload. its just asking the servers to reload the segment during which it will generate missing indices

ok thanks …