Derive oldestActiveXid at correct time for Hot Standby.
There was a timing window between when oldestActiveXid was derived
and when it should have been derived that only shows itself under
heavy load. Move code around to ensure correct timing of derivation.
No change to StartupSUBTRANS() code, which is where this failed.
Bug report by Chris Redekop
Branch
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REL9_1_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/bf70bf4c7177bdd5c6644da65c0ccea47405d5f3
Modified Files
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src/backend/access/transam/xlog.c | 14 +++++++--
src/backend/storage/ipc/procarray.c | 57 +++++++++++++++++++++++++++++++++++
src/backend/storage/ipc/standby.c | 3 +-
src/include/storage/procarray.h | 1 +
src/include/storage/standby.h | 2 +-
5 files changed, 71 insertions(+), 6 deletions(-)