Start Hot Standby faster when initial snapshot is incomplete.
If the initial snapshot had overflowed then we can start whenever
the latest snapshot is empty, not overflowed or as we did already,
start when the xmin on primary was higher than xmax of our starting
snapshot, which proves we have full snapshot data.
Bug report by Chris Redekop
Branch
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REL9_0_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/ff8451aa14c8513e429cbef09ddc72e79da366a5
Modified Files
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src/backend/storage/ipc/procarray.c | 52 +++++++++++++++++++++-------------
1 files changed, 32 insertions(+), 20 deletions(-)