(pulsar) branch branch-4.0 updated: [fix][test] Fix flaky SubscriptionSeekTest.testSeekWillNotEncounteredFencedError by counting subscription is fenced only after seek (#24865)

[technoboy]

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technoboy pushed a commit to branch branch-4.0
in repository https://gitbox.apache.org/repos/asf/pulsar.git


The following commit(s) were added to refs/heads/branch-4.0 by this push:
     new 7140420cf42 [fix][test] Fix flaky 
SubscriptionSeekTest.testSeekWillNotEncounteredFencedError by counting 
subscription is fenced only after seek (#24865)
7140420cf42 is described below

commit 7140420cf4277d5818a7f87d11d7ee2cdee4a254
Author: sinan liu <liusinan1...@gmail.com>
AuthorDate: Sat Oct 18 03:22:32 2025 +0800

    [fix][test] Fix flaky 
SubscriptionSeekTest.testSeekWillNotEncounteredFencedError by counting 
subscription is fenced only after seek (#24865)
---
 .../apache/pulsar/broker/service/SubscriptionSeekTest.java    | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git 
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/SubscriptionSeekTest.java
 
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/SubscriptionSeekTest.java
index ffdb8610d58..ec16cc7d9eb 100644
--- 
a/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/SubscriptionSeekTest.java
+++ 
b/pulsar-broker/src/test/java/org/apache/pulsar/broker/service/SubscriptionSeekTest.java
@@ -38,6 +38,7 @@ import java.util.UUID;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.Function;
 import lombok.Cleanup;
@@ -1046,11 +1047,14 @@ public class SubscriptionSeekTest extends 
BrokerTestBase {
         // Create a pulsar client with a subscription fenced counter.
         ClientBuilderImpl clientBuilder = (ClientBuilderImpl) 
PulsarClient.builder().serviceUrl(lookupUrl.toString());
         AtomicInteger receivedFencedErrorCounter = new AtomicInteger();
+        // Count switch: Default off, turn on again before seek starts.
+        final AtomicBoolean countAfterSeek = new AtomicBoolean(false);
         @Cleanup
         PulsarClient client = 
InjectedClientCnxClientBuilder.create(clientBuilder, (conf, eventLoopGroup) ->
                 new ClientCnx(InstrumentProvider.NOOP, conf, eventLoopGroup) {
                     protected void handleError(CommandError error) {
-                        if (error.getMessage() != null && 
error.getMessage().contains("Subscription is fenced")) {
+                        if (error.getMessage() != null && 
error.getMessage().contains("Subscription is fenced")
+                                && countAfterSeek.get()) {
                             receivedFencedErrorCounter.incrementAndGet();
                         }
                         super.handleError(error);
@@ -1087,10 +1091,9 @@ public class SubscriptionSeekTest extends BrokerTestBase 
{
             assertNotNull(msg);
             consumer.acknowledge(msg);
         }
+        countAfterSeek.set(true);
         consumer.seek(msgId1);
-        Awaitility.await().untilAsserted(() -> {
-            assertTrue(consumer.isConnected());
-        });
+        Awaitility.await().untilAsserted(() -> 
assertTrue(consumer.isConnected()));
         assertEquals(receivedFencedErrorCounter.get(), 0);
 
         // cleanup.