From f08630b914f0bbc807f8d8bcfe3b5e914371c59d Mon Sep 17 00:00:00 2001
From: Andrew Kryczka <andrewkr@fb.com>
Date: Fri, 10 Apr 2020 10:43:38 -0700
Subject: [PATCH] explicitly mark backup interfaces non-extensible (#6654)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/6654

Reviewed By: cheng-chang

Differential Revision: D20878094

Pulled By: ajkr

fbshipit-source-id: 94d2561bdb6ffb7fe3773ca07d475337600a5b57
---
 include/rocksdb/utilities/backupable_db.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/rocksdb/utilities/backupable_db.h b/include/rocksdb/utilities/backupable_db.h
index eea9ea2de..89a8a9d5a 100644
--- a/include/rocksdb/utilities/backupable_db.h
+++ b/include/rocksdb/utilities/backupable_db.h
@@ -223,6 +223,7 @@ class BackupStatistics {
 
 // A backup engine for accessing information about backups and restoring from
 // them.
+// BackupEngineReadOnly is not extensible.
 class BackupEngineReadOnly {
  public:
   virtual ~BackupEngineReadOnly() {}
@@ -286,6 +287,7 @@ class BackupEngineReadOnly {
 };
 
 // A backup engine for creating new backups.
+// BackupEngine is not extensible.
 class BackupEngine {
  public:
   virtual ~BackupEngine() {}