From 8f2598ac9d730bf0a7c08b9cdb6071fd7b73ba3b Mon Sep 17 00:00:00 2001
From: Sagar Vemuri <sagar0@users.noreply.github.com>
Date: Thu, 17 Aug 2017 14:42:54 -0700
Subject: [PATCH] Enable Cassandra merge operator to be called with a single
 merge operand

Summary:
Updating Cassandra merge operator to make use of a single merge operand when needed. Single merge operand support has been introduced in #2721.
Closes https://github.com/facebook/rocksdb/pull/2753

Differential Revision: D5652867

Pulled By: sagar0

fbshipit-source-id: b9fbd3196d3ebd0b752626dbf9bec9aa53e3e26a
---
 utilities/cassandra/merge_operator.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/utilities/cassandra/merge_operator.h b/utilities/cassandra/merge_operator.h
index 679474075..28066ca05 100644
--- a/utilities/cassandra/merge_operator.h
+++ b/utilities/cassandra/merge_operator.h
@@ -26,6 +26,8 @@ public:
                                  Logger* logger) const override;
 
   virtual const char* Name() const override;
+
+  virtual bool AllowSingleOperand() const override { return true; }
 };
 } // namespace cassandra
 } // namespace rocksdb