database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-09 17:03:00 +03:00
Code Activity

Revert 1f30295eab

Browse Source 
Reported-by: Tom Lane
This commit is contained in:
Simon Riggs
2017-06-24 13:03:55 +01:00
parent d1fcc62298
commit 829f12e269
1 changed files with 8 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/backend/utils/time/snapmgr.c
View File

@@ -2076,6 +2076,14 @@ SerializeSnapshot(Snapshot snapshot, char *start_address)
serialized_snapshot.whenTaken = snapshot->whenTaken;
serialized_snapshot.lsn = snapshot->lsn;
/*
* Ignore the SubXID array if it has overflowed, unless the snapshot was
* taken during recovey - in that case, top-level XIDs are in subxip as
* well, and we mustn't lose them.
*/
if (serialized_snapshot.suboverflowed && !snapshot->takenDuringRecovery)
serialized_snapshot.subxcnt = 0;
/* Copy struct to possibly-unaligned buffer */
memcpy(start_address,
&serialized_snapshot, sizeof(SerializedSnapshotData));
@@ -2092,9 +2100,6 @@ SerializeSnapshot(Snapshot snapshot, char *start_address)
* snapshot taken during recovery; all the top-level XIDs are in subxip as
* well in that case, so we mustn't lose them.
*/
if (serialized_snapshot.suboverflowed && !snapshot->takenDuringRecovery)
serialized_snapshot.subxcnt = 0;
if (serialized_snapshot.subxcnt > 0)
{
Size subxipoff = sizeof(SerializedSnapshotData) +