[HACKERS] Write operations in parallel mode

Now that dynamic shared memory hash table has been committed
(8c0d7bafad36434cb08ac2c78e69ae72c194ca20) I wonder if it's still a big deal
to remove restrictions like this in (e.g. heap_update()):
/* * Forbid this during a parallel operation, lest it allocate a combocid. * Other workers might need that combocid for
visibilitychecks, and we * have no provision for broadcasting it to them. */if (IsInParallelMode())    ereport(ERROR,
        (errcode(ERRCODE_INVALID_TRANSACTION_STATE),             errmsg("cannot update tuples during aparallel
operation")));



--
Antonin Houska
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de, http://www.cybertec.at