Обсуждение: pgsql: Revert "Fix accumulation of parallel worker instrumentation."

Revert "Fix accumulation of parallel worker instrumentation."

This reverts commit 778e78ae9fa51e58f41cbdc72b293291d02d8984.  Per
further discussion, that doesn't seem to be the best possible fix.

Discussion: http://postgr.es/m/CAA4eK1LW2aFKzY3=vwvc=t-juzPPVWP2uT1bpx_MeyEqnM+p8g@mail.gmail.com

Branch
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REL_10_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/7b3f85073c8dd470e01583b20269e7c87898b6f7

Modified Files
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src/backend/executor/execParallel.c           | 51 +++++++--------------------
src/test/regress/expected/select_parallel.out | 21 -----------
src/test/regress/sql/select_parallel.sql      |  7 ----
3 files changed, 13 insertions(+), 66 deletions(-)