If i run: pgbench -i -s30
And then create the function: CREATE OR REPLACE FUNCTION foobar(text) RETURNS text LANGUAGE plperl IMMUTABLE PARALLEL SAFE STRICT COST 10000 AS $function$ return scalar reverse($_[0]); $function$; Then when I create in index, I get a warning: jjanes=# create index on pgbench_accounts (foobar(filler)); WARNING: cannot set parameters during a parallel operation WARNING: cannot set parameters during a parallel operation If I create the index again within the same session, there is no WARNING. This only occurs if plperl.on_init is set in the postgresql.conf file. It doesn't seem to matter what it is set to, even the empty string triggers the warning. plperl.on_init='' As far as I can tell the index is created correctly despite the warning. Cheers, Jeff
