Match the buffer usage tracking for leader and worker backends.
In the leader backend, we don't track the buffer usage for ExecutorStart
phase whereas in worker backend we track it for ExecutorStart phase as
well. This leads to different value for buffer usage stats for the
parallel and non-parallel query. Change the code so that worker backend
also starts tracking buffer usage after ExecutorStart.
Author: Amit Kapila and Robert Haas
Reviewed-by: Robert Haas and Andres Freund
Backpatch-through: 9.6 where this code was introduced
Discussion: https://postgr.es/m/86137f17-1dfb-42f9-7421-82fd786b04a1@anayrat.info
Branch
------
REL9_6_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/7124c93fb54fdd3bcf98e29392fc66ddb81f5343
Modified Files
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src/backend/executor/execParallel.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)