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_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/0aba37abfeaa8c44b6a59f672611be9650e0ccc7 Modified Files -------------- src/backend/executor/nodeMemoize.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
