postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	1173344e74	Adjust WAL code so that checkpoints truncate the xlog at the previous checkpoint's redo pointer, not its undo pointer, per discussion in pghackers a few days ago. No point in hanging onto undo information until we have the ability to do something with it --- and this solves a rather large problem with log space for long-running transactions. Also, change all calls of write() to detect the case where write returned a count less than requested, but failed to set errno. Presume that this situation indicates ENOSPC, and give the appropriate error message, rather than a random message associated with the previous value of errno.	25 years ago
Bruce Momjian	c2a062b7fe	Add dbase conversion utility to /contrib.	25 years ago

Author

SHA1

Message

Date

Tom Lane

1173344e74

Adjust WAL code so that checkpoints truncate the xlog at the previous

checkpoint's redo pointer, not its undo pointer, per discussion in
pghackers a few days ago.  No point in hanging onto undo information
until we have the ability to do something with it --- and this solves
a rather large problem with log space for long-running transactions.
Also, change all calls of write() to detect the case where write
returned a count less than requested, but failed to set errno.
Presume that this situation indicates ENOSPC, and give the appropriate
error message, rather than a random message associated with the previous
value of errno.

25 years ago

Bruce Momjian

c2a062b7fe

Add dbase conversion utility to /contrib.

25 years ago

2 Commits (e30b283f30c39648abc17e14b709ad93f53aac95)