commit 4635158cef7dd3f4f45917c0ed94e34fce12c056
Author: Thomas Draebing <thomas.draebing@sap.com>
Date:   Wed Aug 12 15:29:38 2020 +0200

    Register graceful shutdown for flush caches command
    
    Change-Id: I487015c59a0787b10047b81ad1f9b73aa10dbd88

diff --git a/java/com/google/gerrit/sshd/commands/FlushCaches.java b/java/com/google/gerrit/sshd/commands/FlushCaches.java
index 3a06660..e048eae 100644
--- a/java/com/google/gerrit/sshd/commands/FlushCaches.java
+++ b/java/com/google/gerrit/sshd/commands/FlushCaches.java
@@ -56,6 +56,7 @@ final class FlushCaches extends SshCommand {
 
   @Override
   protected void run() throws Failure {
+    enableGracefulStop();
     try {
       if (list) {
         if (all || !caches.isEmpty()) {