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commit    cee9cadb592fed6a6cb126f02002aba029544bd8
Author:   Noah Misch <noah@leadboat.com>
Date:     Thu May 14 03:42:09 2020 +0000
First released in: 13.0, 9.5.23, 9.6.19, 10.14, 11.9, 12.4

    Fix pg_recvlogical avoidance of superfluous Standby Status Update.
    
    The defect suppressed a Standby Status Update message when bytes flushed
    to disk had changed but bytes received had not changed.  If
    pg_recvlogical then exited with no intervening Standby Status Update,
    the next pg_recvlogical repeated already-flushed records.  The defect
    could also cause superfluous messages, which are functionally harmless.
    Back-patch to 9.5 (all supported versions).
    
    Discussion: https://postgr.es/m/20200502221647.GA3941274@rfd.leadboat.com


 src/bin/pg_basebackup/pg_recvlogical.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bin/pg_basebackup/pg_recvlogical.c b/src/bin/pg_basebackup/pg_recvlogical.c
index 1304b277bc3..cc8616844ba 100644
--- a/src/bin/pg_basebackup/pg_recvlogical.c
+++ b/src/bin/pg_basebackup/pg_recvlogical.c
@@ -126,7 +126,7 @@ sendFeedback(PGconn *conn, TimestampTz now, bool force, bool replyRequested)
 	 */
 	if (!force &&
 		last_written_lsn == output_written_lsn &&
-		last_fsync_lsn != output_fsync_lsn)
+		last_fsync_lsn == output_fsync_lsn)
 		return true;
 
 	if (verbose)


[parent: 8222a9d9a123]