diff --git a/pkg/ddc/base/portallocator/random_allocator.go b/pkg/ddc/base/portallocator/random_allocator.go
index 65c040436e9..72f211ec97e 100644
--- a/pkg/ddc/base/portallocator/random_allocator.go
+++ b/pkg/ddc/base/portallocator/random_allocator.go
@@ -48,6 +48,8 @@ func newRandomAllocator(pr *net.PortRange, log logr.Logger) (*RandomAllocator, e
 	}, nil
 }
 
+// Allocate is a no-op for RandomAllocator.
+// Individual port allocation checks are not currently required by this allocator.
 func (r *RandomAllocator) Allocate(port int) error {
 	// not judge whether port can be allocated or not
 	return nil