From 66b7b920cf5a0a9c71212573ef47fb2c7ea9b5ff Mon Sep 17 00:00:00 2001
From: =?utf8?q?Piotr=20Da=C5=82ek?= <piotr.dalek@ts.fujitsu.com>
Date: Fri, 23 Oct 2015 15:46:20 +0200
Subject: [PATCH] mon/MonitorDBStore: use single-key LevelDB::get() method
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Make MonitorDBStore use single-key ::get() method for some performance
increase in heavy K/V workloads.

Signed-off-by: Piotr Dałek <piotr.dalek@ts.fujitsu.com>
---
 src/mon/MonitorDBStore.h | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/mon/MonitorDBStore.h b/src/mon/MonitorDBStore.h
index 15558e3da98..b9b0ee54c93 100644
--- a/src/mon/MonitorDBStore.h
+++ b/src/mon/MonitorDBStore.h
@@ -507,14 +507,12 @@ class MonitorDBStore
   }
 
   int get(const string& prefix, const string& key, bufferlist& bl) {
-    set<string> k;
-    k.insert(key);
-    map<string,bufferlist> out;
-
-    db->get(prefix, k, &out);
-    if (out.empty())
+    
+    bufferlist outbl;
+    db->get(prefix, key, &outbl);
+    if (outbl.length() == 0) 
       return -ENOENT;
-    bl.append(out[key]);
+    bl.append(outbl);
 
     return 0;
   }
-- 
2.47.3