kaushik-develop opened a new issue #11289:
URL: https://github.com/apache/pulsar/issues/11289
**Describe the bug**
If a topic is created, and a subscribe() is done on a ConsumerBuilder using
that topic, the subscribe hangs.
This is a regression.
The unit-test which shows this issue runs to completion on Pulsar up to
commit-id 555042a45d9692148c302fbdedbb47f1f2572a48
But it stalls starting from commit-id
794aa20d9f2a4e668cc36465362d22e042e6e536
**To Reproduce**
The issue can be reproduced by executing the unit test in the commit below.
On a Pulsar repo sync-ed to commit-id
555042a45d9692148c302fbdedbb47f1f2572a48:
% mvn test -Dtest=org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
-pl pulsar-broker
[...]
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 9.226
s - in org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 20.512 s
[INFO] Finished at: 2021-07-12T12:35:38-07:00
[INFO]
------------------------------------------------------------------------
%
With the repo sync-ed to 794aa20d9f2a4e668cc36465362d22e042e6e536 (or later):
% mvn test -Dtest=org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
-pl pulsar-broker
[...]
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
[ERROR] Tests run: 4, Failures: 1, Errors: 0, Skipped: 3, Time elapsed:
129.393 s <<< FAILURE! - in
org.apache.pulsar.broker.resourcegroup.StallSubscribeTest
[ERROR]
testProduceConsumeUsageOnRG(org.apache.pulsar.broker.resourcegroup.StallSubscribeTest)
Time elapsed: 60.016 s <<< FAILURE!
java.lang.AssertionError: Got exception while building consumer: ex={}
expected [true] but found [false]
at org.testng.Assert.fail(Assert.java:99)
at org.testng.Assert.failNotEquals(Assert.java:1037)
at org.testng.Assert.assertTrue(Assert.java:45)
at
org.apache.pulsar.broker.resourcegroup.StallSubscribeTest.testProduceConsumeUsageOnRG(StallSubscribeTest.java:72)
at
org.apache.pulsar.broker.resourcegroup.StallSubscribeTest.testProduceConsumeUsageOnRG(StallSubscribeTest.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
at
org.testng.internal.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:45)
at
org.testng.internal.InvokeMethodRunnable.call(InvokeMethodRunnable.java:73)
at
org.testng.internal.InvokeMethodRunnable.call(InvokeMethodRunnable.java:11)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
[INFO]
[INFO] Results:
[INFO]
[ERROR] Failures:
[ERROR]
org.apache.pulsar.broker.resourcegroup.StallSubscribeTest.testProduceConsumeUsageOnRG(org.apache.pulsar.broker.resourcegroup.StallSubscribeTest)
[INFO] Run 1: PASS
[ERROR] Run 2:
StallSubscribeTest.testProduceConsumeUsageOnRG:53->testProduceConsumeUsageOnRG:72
Got exception while building consumer: ex={} expected [true] but found [false]
[INFO]
[INFO]
[ERROR] Tests run: 3, Failures: 1, Errors: 0, Skipped: 2
[INFO]
[INFO]
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 02:25 min
[INFO] Finished at: 2021-07-12T12:41:17-07:00
[INFO]
------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-surefire-plugin:3.0.0-M3:test (default-test) on
project pulsar-broker: There are test failures.
[ERROR]
**Expected behavior**
The unit-test is expected to complete.
**Workaround**
Immediate workaround: Don't create the topic; do the subscribe without topic
creation (not sure if it will result in some other issue downstream).
**Desktop (please complete the following information):**
% uname -a
Darwin C02D2553MD6R 19.6.0 Darwin Kernel Version 19.6.0: Thu May 6 00:48:39
PDT 2021; root:xnu-6153.141.33~1/RELEASE_X86_64 x86_64
%
**Additional context**
This issue is resulting in the existing UT RGUsageMTAggrWaitForAllMesgs
timing out on my desktop.
[mvn test
-Dtest=org.apache.pulsar.broker.resourcegroup.RGUsageMTAggrWaitForAllMesgs -pl
pulsar-broker]
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