On Mon, Aug 28, 2017 at 10:17 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: > In the meantime, I think what we should do is commit the bug fix more or > less as I have it, and then work on Amit's concern about losing parallel > efficiency by separating the resetting of shared parallel-scan state > into a new plan tree traversal that's done before launching new worker > processes. The only real alternative is to lobotomize the existing rescan > optimizations, and that seems like a really poor choice from here.
There's already ExecParallelReinitialize, which could be made to walk the nodes in addition to what it does already, but I don't understand exactly what else needs fixing. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
