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| author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2017-08-12 21:36:07 -0400 |
|---|---|---|
| committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2017-08-12 23:26:35 -0400 |
| commit | 2336f842843e5bd26779692b39eaf0ef9d4d31da (patch) | |
| tree | d662f7db72495af3f542109f546cde02ca25532b /src/backend | |
| parent | e88928c50dfe2623c899f82b54aad69da248ad07 (diff) | |
| download | postgresql-2336f842843e5bd26779692b39eaf0ef9d4d31da.tar.gz postgresql-2336f842843e5bd26779692b39eaf0ef9d4d31da.zip | |
Reword comment for clarity
Reported by Masahiko Sawada
Discussion: https://postgr.es/m/CAD21AoB+ycZ2z-4Ye=6MfQ_r0aV5r6cvVPw4kOyPdp6bHqQoBQ@mail.gmail.com
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/replication/logical/snapbuild.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/replication/logical/snapbuild.c b/src/backend/replication/logical/snapbuild.c index 153d1712ef3..0ca4fa5d256 100644 --- a/src/backend/replication/logical/snapbuild.c +++ b/src/backend/replication/logical/snapbuild.c @@ -1116,9 +1116,9 @@ SnapBuildProcessRunningXacts(SnapBuild *builder, XLogRecPtr lsn, xl_running_xact * so, because we only need to do it for catalog transactions since we * only ever look at those. * - * NB: Because of that xmax can be lower than xmin, because we only - * increase xmax when a catalog modifying transaction commits. While odd - * looking, it's correct and actually more efficient this way since we hit + * NB: We only increase xmax when a catalog modifying transaction commits + * (see SnapBuildCommitTxn). Because of this, xmax can be lower than xmin, + * which looks odd but is correct and actually more efficient, since we hit * fast paths in tqual.c. */ builder->xmin = running->oldestRunningXid; |