1 files changed, 25 insertions, 0 deletions
diff --git a/src/rocksdb/db/post_memtable_callback.h b/src/rocksdb/db/post_memtable_callback.h
new file mode 100644
index 000000000..fbf2fbe86
--- /dev/null
+++ b/src/rocksdb/db/post_memtable_callback.h
@@ -0,0 +1,25 @@
+//  Copyright (c) Meta Platforms, Inc. and affiliates. All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#pragma once
+
+#include "rocksdb/status.h"
+#include "rocksdb/types.h"
+
+namespace ROCKSDB_NAMESPACE {
+
+// Callback invoked after finishing writing to the memtable but before
+// publishing the sequence number to readers.
+// Note that with write-prepared/write-unprepared transactions with
+// two-write-queues, PreReleaseCallback is called before publishing the
+// sequence numbers to readers.
+class PostMemTableCallback {
+ public:
+  virtual ~PostMemTableCallback() {}
+
+  virtual Status operator()(SequenceNumber seq, bool disable_memtable) = 0;
+};
+
+}  // namespace ROCKSDB_NAMESPACE