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Posted to commits@cassandra.apache.org by "Andres de la Peña (Jira)" <ji...@apache.org> on 2021/04/16 16:56:00 UTC

[jira] [Commented] (CASSANDRA-16607) Fix flaky test testRequestResponse – org.apache.cassandra.net.MockMessagingServiceTest

    [ https://issues.apache.org/jira/browse/CASSANDRA-16607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17323947#comment-17323947 ] 

Andres de la Peña commented on CASSANDRA-16607:
-----------------------------------------------

It seems that the problem is that since CASSANDRA-12653 {{MockMessagingSpy#mockedMessageResponses}} is increased asynchronously by [this thread|https://github.com/apache/cassandra/blob/trunk/test/unit/org/apache/cassandra/net/MatcherResponse.java#L185-L198]. Because of this the value of {{mockedMessageResponses}} can be checked before it has been increased by the thread, causing the reported failure.

The proposed PRs simply use {{spinAssertEquals}} to wait for the writer thread. Also, I think there could be thread safety issues when increasing {{mockedMessageResponses}} from different threads, so I'm making it an {{AtomicInteger}}.

CI for 3.11:
 * [CircleCI|https://app.circleci.com/pipelines/github/adelapena/cassandra/275/workflows/8be80b18-c168-478d-ae1d-7cb5c04d4b9d]
 * [Multiplexer MockMessagingServiceTest|https://jenkins-dse.build.dsinternal.org/view/Parameterized/job/parameterized-testall/805/]
 * [Multiplexer ShadowRoundTest|https://jenkins-dse.build.dsinternal.org/view/Parameterized/job/parameterized-testall/807/]

CI for trunk:
 * [CircleCI j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/276/workflows/f95f3503-1471-492a-ab86-13b7cd9fded2]
 * [CircleCI j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/275/workflows/8be80b18-c168-478d-ae1d-7cb5c04d4b9d]
 * [Multiplexer MockMessagingServiceTest|https://jenkins-dse.build.dsinternal.org/view/Parameterized/job/parameterized-testall/806/]
 * [Multiplexer ShadowRoundTest|https://jenkins-dse.build.dsinternal.org/view/Parameterized/job/parameterized-testall/808/]

> Fix flaky test testRequestResponse – org.apache.cassandra.net.MockMessagingServiceTest
> --------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-16607
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16607
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Test/unit
>            Reporter: David Capwell
>            Assignee: Andres de la Peña
>            Priority: Normal
>             Fix For: 4.0-rc
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> https://ci-cassandra.apache.org/blue/organizations/jenkins/Cassandra-devbranch/detail/Cassandra-devbranch/659/tests/
> {code}
> Error
> expected:<1> but was:<0>
> Stacktrace
> junit.framework.AssertionFailedError: expected:<1> but was:<0>
> 	at org.apache.cassandra.net.MockMessagingServiceTest.testRequestResponse(MockMessagingServiceTest.java:81)
> 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> Standard Output
> INFO  [main] 2021-04-15 08:22:46,838 YamlConfigurationLoader.java:93 - Configuration location: file:/home/cassandra/cassandra/test/conf/cassandra.yaml
> DEBUG [main] 2021-04-15 08:22:46,840 YamlConfigurationLoader.java:112 - Loading settings from file:/home/cassandra/cassandra/test/conf/cassandra.yaml
> DEBUG [main] 2021-04-15 08:22:46,899 InternalLoggerFactory.java:63 - Using SLF4J as the default logging framework
> DEBUG [main] 2021-04-15 08:22:46,911 PlatformDependent0.java:417 - -Dio.netty.noUnsaf
> ...[truncated 61235 chars]...
> te NORMAL, token [a57d4b7f61f49471614b7ac41f16477e]
> DEBUG [main] 2021-04-15 08:22:49,840 StorageService.java:2674 - New node /127.0.0.1:7069 at token a57d4b7f61f49471614b7ac41f16477e
> DEBUG [main] 2021-04-15 08:22:49,848 StorageService.java:2727 - Node /127.0.0.1:7069 state NORMAL, token [a57d4b7f61f49471614b7ac41f16477e]
> INFO  [main] 2021-04-15 08:22:49,848 StorageService.java:2730 - Node /127.0.0.1:7069 state jump to NORMAL
> DEBUG [main] 2021-04-15 08:22:49,849 StorageService.java:1619 - NORMAL
> {code}



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