Derive oldestActiveXid at correct time for Hot Standby.
Simon Riggs <simon@2ndQuadrant.com>
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
Files
| Path | Change | +/− |
|---|---|---|
| src/backend/access/transam/xlog.c | modified | +11 −3 |
| src/backend/storage/ipc/procarray.c | modified | +57 −0 |
| src/backend/storage/ipc/standby.c | modified | +1 −2 |
| src/include/storage/procarray.h | modified | +1 −0 |
| src/include/storage/standby.h | modified | +1 −1 |