Fix two problems in infer_arbiter_indexes().
The first is a pretty simple bug where a relcache entry is used after
the relation is closed. In this particular situation it does not appear
to have bad consequences unless compiled with RELCACHE_FORCE_RELEASE.
The second is that infer_arbiter_indexes() skipped indexes that aren't
yet valid according to indcheckxmin. That's not required here, because
uniqueness checks don't care about visibility according to an older
snapshot. While thats not really a bug, it makes things undesirably
non-deterministic. There is some hope that this explains a test failure
on buildfarm member jaguarundi.
Discussion: 9096.1431102730@sss.pgh.pa.us
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/bab64ef9e8bc56fa5db9bd41cefb54c3d8051dbe
Modified Files
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src/backend/optimizer/util/plancat.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)