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Cleanup commit timestamp module activaction, again

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Further tweak commit_ts.c so that on a standby the state is completely
consistent with what that in the master, rather than behaving
differently in the cases that the settings differ.  Now in standby and
master the module should always be active or inactive in lockstep.

Author: Petr Jelínek, with some further tweaks by Álvaro Herrera.

Backpatch to 9.5, where commit timestamps were introduced.

Discussion: http://www.postgresql.org/message-id/5622BF9D.2010409@2ndquadrant.com
This commit is contained in:
Alvaro Herrera
2015-10-27 15:06:50 -03:00
parent 0cd836a4e8
commit 531d21b75f
3 changed files with 83 additions and 74 deletions
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2
src/include/access/commit_ts.h
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@ -40,7 +40,7 @@ extern void CompleteCommitTsInitialization(void);
extern void ShutdownCommitTs(void);
extern void CheckPointCommitTs(void);
extern void ExtendCommitTs(TransactionId newestXact);
extern void TruncateCommitTs(TransactionId oldestXact, bool do_wal);
extern void TruncateCommitTs(TransactionId oldestXact);
extern void SetCommitTsLimit(TransactionId oldestXact,
TransactionId newestXact);
extern void AdvanceOldestCommitTs(TransactionId oldestXact);