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Correct erroneous comment in GetOldestXmin()

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Craig Ringer
This commit is contained in:
Simon Riggs 2017-03-22 16:58:12 +00:00
parent af4b1a0869
commit c137c68ea6
1 changed files with 1 additions and 0 deletions
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src/backend/storage/ipc/procarray.c
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@ -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