Accumulate Memoize parallel worker stats across rescans When a Gather or Gather Merge node is rescanned, it starts a new set of workers, which write their Memoize stats into the same shared memory slots as the previous worker. ExecEndMemoize() used memcpy() for this, so EXPLAIN ANALYZE showed only the stats for the final scan.
Here we adjust ExecEndMemoize() to accumulate the counters so that we gather up the totals over all rescans. Author: Tatsuya Kawata <[email protected]> Reviewed-by: David Rowley <[email protected]> Discussion: https://postgr.es/m/cahza6qea-4vb355co-2yaxdmrtpeney0rg9cd2zmlyscyvv...@mail.gmail.com Backpatch-through: 14 Branch ------ REL_15_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/bd811277c90a6a29980d664da02e8bddccbe622a Modified Files -------------- src/backend/executor/nodeMemoize.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
