adurugkar@xento.com writes:
> describe command is getting locked due to ALTER statement running on real
> table.
This isn't a bug IMO; if anything, it's a bug that the old implementation
of pg_get_indexdef didn't result in acquiring any lock. Without a lock,
you're at least at risk of printing garbage information, and I suspect
crashes were not out of the question.
> It was working fine on 9.3.4 version.
I rather doubt this behavior changed just in 9.3.5. That code got
rewritten during 9.3 development.
regards, tom lane