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May 21, 2015 at 16:14 comment added codedabbler We have to use our existing RDBMS, and also have to think about the in-memory RDBMS that will soon be introduced. The reason for moving from an existing wide table to a narrow table is to solve the hydration issue, i.e., We avoid hydrating the null values and so our java objects reduce the memory pressure. But the concern here is with the increase in number of rows generated.
May 21, 2015 at 15:59 history answered TMN CC BY-SA 3.0