Propagate sort instrumentation from workers back to leader.
Up until now, when parallel query was used, no details about the
sort method or space used by the workers were available; details
were shown only for any sorting done by the leader. Fix that.
Commit 1177ab1dabf72bafee8f19d904cee3a299f25892 forced the test case
added by commit 1f6d515a67ec98194c23a5db25660856c9aab944 to run
without parallelism; now that we have this infrastructure, allow
that again, with a little tweaking to make it pass with and without
force_parallel_mode.
Robert Haas and Tom Lane
Discussion: http://postgr.es/m/CA+Tgmoa2VBZW6S8AAXfhpHczb=Rf6RqQ2br+zJvEgwJ0uoD_tQ@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/bf11e7ee2e3607bb67d25aec73aa53b2d7e9961b
Modified Files
--------------
src/backend/commands/explain.c | 57 +++++++++++-
src/backend/executor/execParallel.c | 155 ++++++++++++++++++--------------
src/backend/executor/nodeSort.c | 97 ++++++++++++++++++++
src/backend/utils/sort/tuplesort.c | 56 +++++++++---
src/include/executor/nodeSort.h | 7 ++
src/include/nodes/execnodes.h | 12 +++
src/include/utils/tuplesort.h | 34 ++++++-
src/test/regress/expected/subselect.out | 5 +-
src/test/regress/sql/subselect.sql | 6 +-
9 files changed, 342 insertions(+), 87 deletions(-)
