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Commit ed5c4e4a authored by Tom Lane's avatar Tom Lane
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Improve documentation about reasoning behind the order of operations 

in GetSnapshotData, GetNewTransactionId, CommitTransaction, AbortTransaction,
etc.  Correct race condition in transaction status testing in
HeapTupleSatisfiesVacuum --- this wasn't important for old VACUUM with
exclusive lock on its table, but it sure is important now.  All per
pghackers discussion 7/11/01 and 7/12/01.
parent ffbd97c8
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