From 0791373fb2245278cd916d8c2b224887a2a9f4b5 Mon Sep 17 00:00:00 2001
From: Sergey Nuyanzin <snuyanzin@gmail.com>
Date: Fri, 24 Jul 2026 10:05:41 +0200
Subject: [PATCH] [FLINK-40231][tests] Fix flaky
 HistoryServerArchiveFetcherTest#testArchiveStateTransition

---
 .../webmonitor/history/HistoryServerArchiveFetcher.java      | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServerArchiveFetcher.java b/flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServerArchiveFetcher.java
index e667d9cd36521..632551c8eb32d 100644
--- a/flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServerArchiveFetcher.java
+++ b/flink-runtime-web/src/main/java/org/apache/flink/runtime/webmonitor/history/HistoryServerArchiveFetcher.java
@@ -623,7 +623,10 @@ ArchiveEvent lazyProcessJobArchive(String jobId, Path jobArchive, boolean indivi
 
         ArchiveEventType archiveEventType =
                 overviewCreated ? ArchiveEventType.OVERVIEW_CREATED : ArchiveEventType.CREATED;
-        archiveMetaInfo.setEventType(archiveEventType);
+        if (detailArchives.isEmpty()) {
+            // otherwise the async task above is now the sole owner of eventType transitions.
+            archiveMetaInfo.setEventType(archiveEventType);
+        }
         return new ArchiveEvent(jobId, archiveEventType);
     }