| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Derive oldestActiveXid at correct time for Hot Standby. |
| Date: | 2011-11-02 08:53:21 |
| Message-ID: | E1RLWZV-0004jG-IE@gemulon.postgresql.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-committers |
Derive oldestActiveXid at correct time for Hot Standby.
There was a timing window between when oldestActiveXid was derived
and when it should have been derived that only shows itself under
heavy load. Move code around to ensure correct timing of derivation.
No change to StartupSUBTRANS() code, which is where this failed.
Bug report by Chris Redekop
Branch
------
REL9_0_STABLE
Details
-------
http://git.postgresql.org/pg/commitdiff/656bba95af3950b26e9e97d86d29787d89e2b423
Modified Files
--------------
src/backend/access/transam/xlog.c | 14 +++++++--
src/backend/storage/ipc/procarray.c | 57 +++++++++++++++++++++++++++++++++++
src/backend/storage/ipc/standby.c | 3 +-
src/include/storage/procarray.h | 1 +
src/include/storage/standby.h | 2 +-
5 files changed, 71 insertions(+), 6 deletions(-)
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Simon Riggs | 2011-11-02 08:53:58 | pgsql: Derive oldestActiveXid at correct time for Hot Standby. |
| Previous Message | Simon Riggs | 2011-11-02 08:48:09 | pgsql: Start Hot Standby faster when initial snapshot is incomplete. |