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how many ram i need for processing with spark and get some query like select and aggregation and order them?
Use VM
If you can let it process the data and wait for a pretty long time then you can go with as low as 8GiB RAM. What processor are you using that always matters . Now if you can afford i7 kind of processor and some quality GPU with 12-16 GiB of ram . That's gonna run fantastic, without problems like hanging or something else. Choice is yours . And not using cloud processing is a good idea( sometimes ) Privacy matters .
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