Andrew Dunstan <andrew@dunslane.net> writes:
> Hmm. Yeah. It looks like commit a7ad5cf0cfcfab8418000d652fa4f0c6ad6c8911
> changed from using the default compression for libz to using the
> compression set in pg_dump options, which defaults to 0. This actually
> seems like the right thing to do, but it certainly should have been
> called out much more forcefully in release notes, and arguably should
> not have been changed in stable releases. Not sure what we do about it now.
I don't think we realized that we were changing the default behavior.
Still, it's clearly a bug fix, so I'm disinclined to revert it now.
regards, tom lane