Correct erroneous comment in GetOldestXmin()

Craig Ringer
2017-03-22 16:58:12 +00:00 · 2017-03-22 16:58:12 +00:00 · c137c68ea6
parent af4b1a0869
commit c137c68ea6
1 changed files with 1 additions and 0 deletions
--- a/src/backend/storage/ipc/procarray.c
+++ b/src/backend/storage/ipc/procarray.c
@ -1294,6 +1294,7 @@ TransactionIdIsActive(TransactionId xid)
 * in the master but are still being replayed on the standby, thus possibly
 * making the GetOldestXmin reading go backwards.  In this case there is a
 * possibility that we lose data that the standby would like to have, but
+ * unless the standby uses a replication slot to make its xmin persistent
 * there is little we can do about that --- data is only protected if the
 * walsender runs continuously while queries are executed on the standby.
 * (The Hot Standby code deals with such cases by failing standby queries