From 4184e759de7f5f220321dc798fbf820f6292896d Mon Sep 17 00:00:00 2001
From: arvindksi274-ksolves <arvind.kandpal@ksolves.com>
Date: Sun, 1 Feb 2026 20:56:55 +0530
Subject: [PATCH] Fix CompactionHistorySystemTableUpgradeTest test expectation
 for legacy compaction history

patch by Arvind Kandpal; reviewed by Dmitry Konstantinov, Maxwell Guo for CASSANDRA-21151
---
 .../upgrade/CompactionHistorySystemTableUpgradeTest.java        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/distributed/org/apache/cassandra/distributed/upgrade/CompactionHistorySystemTableUpgradeTest.java b/test/distributed/org/apache/cassandra/distributed/upgrade/CompactionHistorySystemTableUpgradeTest.java
index 727b7a6285..5f310279b3 100644
--- a/test/distributed/org/apache/cassandra/distributed/upgrade/CompactionHistorySystemTableUpgradeTest.java
+++ b/test/distributed/org/apache/cassandra/distributed/upgrade/CompactionHistorySystemTableUpgradeTest.java
@@ -67,7 +67,7 @@ public class CompactionHistorySystemTableUpgradeTest extends UpgradeTestBase
             ToolRunner.ToolResult toolHistory = invokeNodetoolJvmDtest(cluster.get(1), "compactionhistory");
             toolHistory.assertOnCleanExit();
 
-            assertCompactionHistoryOutPut(toolHistory, KEYSPACE, "tb", ImmutableMap.of(), "UNKNOWN");
+            assertCompactionHistoryOutPut(toolHistory, KEYSPACE, "tb", ImmutableMap.of(), "{}");
 
             // force compact
             cluster.stream().forEach(node -> node.nodetool("compact"));