From 5a011cfd81d5ef3876d4ecb43b6bbffd151f1b03 Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@collectd.org>
Date: Fri, 19 May 2017 08:39:45 +0200
Subject: [PATCH] src/daemon/utils_cache.c: Add debug message for lookup of
 missing metrics.

Issue: #1234
---
 src/daemon/utils_cache.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/daemon/utils_cache.c b/src/daemon/utils_cache.c
index 3386df9a..aa8ce9ef 100644
--- a/src/daemon/utils_cache.c
+++ b/src/daemon/utils_cache.c
@@ -422,6 +422,9 @@ int uc_get_rate_by_name(const char *name, gauge_t **ret_values,
 
     /* remove missing values from getval */
     if (ce->state == STATE_MISSING) {
+      DEBUG("utils_cache: uc_get_rate_by_name: requested metric \"%s\" is in "
+            "state \"missing\".",
+            name);
       status = -1;
     } else {
       ret_num = ce->values_num;
-- 
2.11.0