From 6ce536db498031c12acbb4f79a80ca99275a5e1a Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Mon, 11 Jan 2016 15:00:45 +0100
Subject: [PATCH] Cluster: don't allow CLUSTER SETSLOT with slaves.

---
 src/cluster.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/cluster.c b/src/cluster.c
index abd267d6..ffeff4f3 100644
--- a/src/cluster.c
+++ b/src/cluster.c
@@ -3945,6 +3945,11 @@ void clusterCommand(client *c) {
         int slot;
         clusterNode *n;
 
+        if (nodeIsSlave(myself)) {
+            addReplyError(c,"Please use SETSLOT only with masters.");
+            return;
+        }
+
         if ((slot = getSlotOrReply(c,c->argv[2])) == -1) return;
 
         if (!strcasecmp(c->argv[3]->ptr,"migrating") && c->argc == 5) {