Comments (4)
Alternative to compression by default would be making it configurable by the user per column or per table or per installation or some other way. I am not sure this extra complexity is needed.
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How much of a CPU overhead does the compression come with?
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Sorry I could not find measurements in Java. I will run them again, but that takes quite a while. Here are measurements in C++ just to have some idea.
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This time is just to convert sketches to bytes.
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