Robert Haas <robertmh...@gmail.com> writes: > On Tue, Dec 22, 2020 at 2:33 PM Tom Lane <t...@sss.pgh.pa.us> wrote: >> I'd assume that there's a direct correlation between the compression level >> setting and the window size; but I've not studied the libzstd docs in >> enough detail to know what it is.
> But there is a privilege boundary between the sender and the receiver. > What's alleged here is that the sender can do a thing which causes the > receiver to burn through tons of memory. It doesn't help anything to > say, well, the sender ought to use a window size of N or less. What if > they don't? The receiver rejects the data as though it were corrupt. regards, tom lane