Thread: pgsql: Ensure no xid gaps during Hot Standby startup

Ensure no xid gaps during Hot Standby startup

In some cases with higher numbers of subtransactions
it was possible for us to incorrectly initialize
subtrans leading to complaints of missing pages.

Bug report by Sergey Konoplev
Analysis and fix by Andres Freund

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/7b2c9d682957418778dfb7217a536c5a99635a2b

Modified Files
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src/backend/access/transam/xlog.c   |    3 ++
src/backend/storage/ipc/procarray.c |   53 +++++++++++++++++++++++++++++++----
src/include/storage/procarray.h     |    1 +
3 files changed, 51 insertions(+), 6 deletions(-)