Robert Haas <robertmh...@gmail.com> writes:
> On Mon, Oct 17, 2016 at 6:24 PM, Stephen Frost <sfr...@snowman.net> wrote:
>> I'm with Thomas on this and I disagree that the "csvlog bloat" argument
>> has merit. If we're worried about bloat in csv then we should provide a
>> way for users to control what goes into the csvlog, not argue that
>> something which is clearly useful be excluded.
> I agree, but I think if we do that it would be highly desirable do
> something to make the format discoverable. For example, at the
> beginning of each file and whenever the format changes, we write some
> kind of unmistakable header line into the file identifying what fields
> will be present on each line thereafter. It's undesirable for log
> analysis tools to need to contain logic that tries (imperfectly, no
> doubt) to reverse-engineer the field list.
Automatic "csv header" at the start of each logfile, perhaps? And
force a logfile switch if it changes.
regards, tom lane
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