On Mon, Mar 27, 2017 at 1:48 AM, Rafia Sabih
<rafia.sa...@enterprisedb.com> wrote:
> This is caused because trigger related functions are marked safe and
> using global variables, hence when executed in parallel are giving
> incorrect  output. Attached patch fixes this. I have modified only
> those functions that are showing incorrect behaviour in the regress
> output and checked regression test with force_parallel_mode = regress
> and all testcases are passing now.

If it's just that they are relying on unsynchronized global variables,
then it's sufficient to mark them parallel-restricted ('r').  Do we
really need to go all the way to parallel-unsafe ('u')?

> This concerns me that should we be checking all the system defined
> functions once again if they are actually parallel safe...?

It's certainly possible that we've made mistakes in other places, too.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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