Force rescanning of parallel-aware scan nodes below a Gather[Merge].
The ExecReScan machinery contains various optimizations for postponing
or skipping rescans of plan subtrees; for example a HashAgg node may
conclude that it can re-use the table it built before, instead of
re-reading its input su
Force rescanning of parallel-aware scan nodes below a Gather[Merge].
The ExecReScan machinery contains various optimizations for postponing
or skipping rescans of plan subtrees; for example a HashAgg node may
conclude that it can re-use the table it built before, instead of
re-reading its input su
Restore test case from a2b70c89ca1a5fcf6181d3c777d82e7b83d2de1b.
Revert the reversion commits a20aac890 and 9b644745c. In the wake of
commit 7df2c1f8d, we should get stable buildfarm results from this test;
if not, I'd like to know sooner not later.
Discussion:
https://postgr.es/m/caa4ek1jkbyys
Restore test case from a2b70c89ca1a5fcf6181d3c777d82e7b83d2de1b.
Revert the reversion commits a20aac890 and 9b644745c. In the wake of
commit 7df2c1f8d, we should get stable buildfarm results from this test;
if not, I'd like to know sooner not later.
Discussion:
https://postgr.es/m/caa4ek1jkbyys
Separate reinitialization of shared parallel-scan state from ExecReScan.
Previously, the parallel executor logic did reinitialization of shared
state within the ExecReScan code for parallel-aware scan nodes. This is
problematic, because it means that the ExecReScan call has to occur
synchronously
Separate reinitialization of shared parallel-scan state from ExecReScan.
Previously, the parallel executor logic did reinitialization of shared
state within the ExecReScan code for parallel-aware scan nodes. This is
problematic, because it means that the ExecReScan call has to occur
synchronously
Code review for nodeGatherMerge.c.
Comment the fields of GatherMergeState, and organize them a bit more
sensibly. Comment GMReaderTupleBuffer more usefully too. Improve
assorted other comments that were obsolete or just not very good English.
Get rid of the use of a GMReaderTupleBuffer for the
Code review for nodeGatherMerge.c.
Comment the fields of GatherMergeState, and organize them a bit more
sensibly. Comment GMReaderTupleBuffer more usefully too. Improve
assorted other comments that were obsolete or just not very good English.
Get rid of the use of a GMReaderTupleBuffer for the
Remove to pre-8.2 coding convention for PG_MODULE_MAGIC
PG_MODULE_MAGIC has been around since 8.2, with 8.1 long since in EOL,
so remove the mention of #ifdef guards for compiling against pre-8.2
sources from the documentation.
Author: Daniel Gustafsson
Branch
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master
Details
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htt
