From c475bf7de5a70954a92280a5827c1007b2073fa5 Mon Sep 17 00:00:00 2001
From: jasonk000 <jasonk@bluedevel.com>
Date: Sat, 9 Aug 2025 23:58:53 -0700
Subject: [PATCH] fix: fix race in Uuids.ClockSeqAndNodeContainer
 double-checked init

Reordered writes in ClockSeqAndNodeContainer.get() to assign `val`
before setting the volatile `initialized` flag.

The updated sequence ensures `val` is fully constructed and visible
before publication via the volatile write.
---
 .../main/java/com/datastax/oss/driver/api/core/uuid/Uuids.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/core/src/main/java/com/datastax/oss/driver/api/core/uuid/Uuids.java b/core/src/main/java/com/datastax/oss/driver/api/core/uuid/Uuids.java
index 8dae31f3734..5d414884500 100644
--- a/core/src/main/java/com/datastax/oss/driver/api/core/uuid/Uuids.java
+++ b/core/src/main/java/com/datastax/oss/driver/api/core/uuid/Uuids.java
@@ -141,9 +141,8 @@ private long get() {
       if (!initialized) {
         synchronized (ClockSeqAndNodeContainer.class) {
           if (!initialized) {
-
-            initialized = true;
             val = makeClockSeqAndNode();
+            initialized = true;
           }
         }
       }