[source-release] prepare release apache-kvrocks-2.1.0-rc1
diff --git a/VERSION b/VERSION
index 71e0f70..a002192 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-999.999.999
\ No newline at end of file
+2.1.0-rc1
\ No newline at end of file