From a17f059d215ddf2e6d8fe75326f9f1e4f8547149 Mon Sep 17 00:00:00 2001
From: "zhaozhao.zz" <276441700@qq.com>
Date: Fri, 10 Jul 2020 13:20:27 +0800
Subject: [PATCH] BITOP: propagate only when it really SET or DEL targetkey
 (#5783)

For example:
    BITOP not targetkey sourcekey

If targetkey and sourcekey doesn't exist, BITOP has no effect,
we do not propagate it, thus can save aof and replica flow.

(cherry picked from commit 2cf11ce5ca6804df9ff65bc90dbd1dfc5e2e497c)
---
 src/bitops.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/bitops.c b/src/bitops.c
index b37bea2bf..4b1a09aa4 100644
--- a/src/bitops.c
+++ b/src/bitops.c
@@ -759,11 +759,12 @@ void bitopCommand(client *c) {
         setKey(c,c->db,targetkey,o);
         notifyKeyspaceEvent(NOTIFY_STRING,"set",targetkey,c->db->id);
         decrRefCount(o);
+        server.dirty++;
     } else if (dbDelete(c->db,targetkey)) {
         signalModifiedKey(c,c->db,targetkey);
         notifyKeyspaceEvent(NOTIFY_GENERIC,"del",targetkey,c->db->id);
+        server.dirty++;
     }
-    server.dirty++;
     addReplyLongLong(c,maxlen); /* Return the output string length in bytes. */
 }