From 0dcc754f6863a792e3598850237ae3e30463e08d Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 10 Jul 2014 16:20:40 +0200
Subject: [PATCH] LATENCY HISTORY returns empty array if no data is available.

Previously we returned an error.
---
 src/latency.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/latency.c b/src/latency.c
index 7dde91a3..0900dcc5 100644
--- a/src/latency.c
+++ b/src/latency.c
@@ -524,8 +524,11 @@ void latencyCommand(redisClient *c) {
     if (!strcasecmp(c->argv[1]->ptr,"history") && c->argc == 3) {
         /* LATENCY HISTORY <event> */
         ts = dictFetchValue(server.latency_events,c->argv[2]->ptr);
-        if (ts == NULL) goto nodataerr;
-        latencyCommandReplyWithSamples(c,ts);
+        if (ts == NULL) {
+            addReplyMultiBulkLen(c,0);
+        } else {
+            latencyCommandReplyWithSamples(c,ts);
+        }
     } else if (!strcasecmp(c->argv[1]->ptr,"graph") && c->argc == 3) {
         /* LATENCY GRAPH <event> */
         sds graph;