mirror of
https://git.postgresql.org/git/postgresql.git
synced 2025-03-13 19:57:53 +08:00
Properly initialize write, flush and replay locations in walsender slots
These would leak random xlog positions if a walsender used for backup would a walsender slot previously used by a replication walsender. In passing also fix a couple of cases where the xlog pointer is directly compared to zero instead of using XLogRecPtrIsInvalid, noted by Michael Paquier.
This commit is contained in:
parent
6d96cd077b
commit
263c19572b
@ -1962,6 +1962,9 @@ InitWalSenderSlot(void)
|
||||
*/
|
||||
walsnd->pid = MyProcPid;
|
||||
walsnd->sentPtr = InvalidXLogRecPtr;
|
||||
walsnd->write = InvalidXLogRecPtr;
|
||||
walsnd->flush = InvalidXLogRecPtr;
|
||||
walsnd->apply = InvalidXLogRecPtr;
|
||||
walsnd->state = WALSNDSTATE_STARTUP;
|
||||
walsnd->latch = &MyProc->procLatch;
|
||||
SpinLockRelease(&walsnd->mutex);
|
||||
@ -2821,15 +2824,15 @@ pg_stat_get_wal_senders(PG_FUNCTION_ARGS)
|
||||
values[1] = CStringGetTextDatum(WalSndGetStateString(state));
|
||||
values[2] = LSNGetDatum(sentPtr);
|
||||
|
||||
if (write == 0)
|
||||
if (XLogRecPtrIsInvalid(write))
|
||||
nulls[3] = true;
|
||||
values[3] = LSNGetDatum(write);
|
||||
|
||||
if (flush == 0)
|
||||
if (XLogRecPtrIsInvalid(flush))
|
||||
nulls[4] = true;
|
||||
values[4] = LSNGetDatum(flush);
|
||||
|
||||
if (apply == 0)
|
||||
if (XLogRecPtrIsInvalid(apply))
|
||||
nulls[5] = true;
|
||||
values[5] = LSNGetDatum(apply);
|
||||
|
||||
|
Loading…
x
Reference in New Issue
Block a user