[CASSANDRA-16758] Flaky ClientResourceLimitsTest

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0, 4.0.0
• Component/s: Test/unit
• Bug Category: Correctness
• Severity: Normal
• Complexity: Normal
• Discovered By: Unit Test
• Platform: All
• Since Version: 4.0-beta4

Source Control Link

https://github.com/apache/cassandra/commit/636e8b99226703d643cc4b30e5c30a64ce830434

Test and Documentation Plan

See PR

• Assignee: Berenguer Blasi
• Reporter: Berenguer Blasi

Authors

Andres de la Peña, Berenguer Blasi, Caleb Rackliffe

Reviewers

Andres de la Peña, Berenguer Blasi, Caleb Rackliffe

• Created: 23/Jun/21 08:08
• Updated: 30/Jun/21 19:41
• Resolved: 30/Jun/21 11:32

Description

Flaky ClientResourceLimitsTest

Error Message

Timed out after waiting 5 seconds for paused connections metric to increment due to backpressure expected:<11> but was:<24>

Stacktrace

junit.framework.AssertionFailedError: Timed out after waiting 5 seconds for paused connections metric to increment due to backpressure expected:<11> but was:<24>
	at org.apache.cassandra.Util.spinAssertEquals(Util.java:610)
	at org.apache.cassandra.transport.ClientResourceLimitsTest.backPressureTest(ClientResourceLimitsTest.java:218)
	at org.apache.cassandra.transport.ClientResourceLimitsTest.testBackPressureWhenEndpointLimitExceeded(ClientResourceLimitsTest.java:179)

Standard Output

INFO  [main] 2021-06-22 01:56:41,489 YamlConfigurationLoader.java:93 - Configuration location: file:////home/cassandra/cassandra/build/test/cassandra.cdc.yaml
DEBUG [main] 2021-06-22 01:56:41,491 YamlConfigurationLoader.java:112 - Loading settings from file:////home/cassandra/cassandra/build/test/cassandra.cdc.yaml
DEBUG [main] 2021-06-22 01:56:41,551 InternalLoggerFactory.java:63 - Using SLF4J as the default logging framework
DEBUG [main] 2021-06-22 01:56:41,565 PlatformDependent0.java:417 - -D
...[truncated 765272 chars]...
 org.apache.cassandra.transport.SimpleClient.execute(SimpleClient.java:275)
	at org.apache.cassandra.transport.ClientResourceLimitsTest.lambda$testQueryUpdatesConcurrentMetricsUpdate$11(ClientResourceLimitsTest.java:352)
	at java.lang.Thread.run(Thread.java:748)
DEBUG [Test Cluster-nio-worker-0] 2021-06-22 01:57:08,353 Slf4JLogger.java:81 - Freed 24 thread-local buffer(s) from thread: Test Cluster-nio-worker-0
INFO  [main] 2021-06-22 01:57:08,364 Server.java:171 - Stop listening for CQL clients

Issue Links

• is related to: CASSANDRA-16663 Request-Based Native Transport Rate-Limiting