Re: enable parallel query by default?

Robert Haas <robertmhaas@gmail.com> writes:
> One of the questions I have about parallel query is whether it should
> be enabled by default.  That is, should we make the default value of
> max_parallel_degree to a value higher than 0?  Perhaps 1, say?

I'm not sure I'm on board with that as a releaseable default, but there
certainly would be an argument for turning it on from now to say mid
beta, so as to improve test coverage.  I think we've done similar things
in the past.

I don't understand however how that doesn't break the regression tests?
Surely we've got lots of EXPLAIN queries that would change.
        regards, tom lane