diff options
Diffstat (limited to 'src/backend/replication/walsender.c')
| -rw-r--r-- | src/backend/replication/walsender.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/backend/replication/walsender.c b/src/backend/replication/walsender.c index 77c8baa32a4..146826d5db9 100644 --- a/src/backend/replication/walsender.c +++ b/src/backend/replication/walsender.c @@ -2966,6 +2966,7 @@ XLogSendPhysical(void) Size nbytes; XLogSegNo segno; WALReadError errinfo; + Size rbytes; /* If requested switch the WAL sender to the stopping state. */ if (got_STOPPING) @@ -3181,7 +3182,16 @@ XLogSendPhysical(void) enlargeStringInfo(&output_message, nbytes); retry: - if (!WALRead(xlogreader, + /* attempt to read WAL from WAL buffers first */ + rbytes = WALReadFromBuffers(&output_message.data[output_message.len], + startptr, nbytes, xlogreader->seg.ws_tli); + output_message.len += rbytes; + startptr += rbytes; + nbytes -= rbytes; + + /* now read the remaining WAL from WAL file */ + if (nbytes > 0 && + !WALRead(xlogreader, &output_message.data[output_message.len], startptr, nbytes, |