[CASSANDRA-18780] ConnectionBurnTest fails with NullPointerException - ASF JIRA

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Details

Type: Bug
Status: Patch Available
Priority: Normal
Resolution: Unresolved
Fix Version/s: 5.x
Component/s: Test/burn
Labels:
None

Bug Category:
Correctness
Severity:
Normal
Complexity:
Challenging
Discovered By:
User Report
Platform:

All
Impacts:

None
Test and Documentation Plan:

Hide

Run ConnectionBurnTest locally.

Show
Run ConnectionBurnTest locally.

Description

The ConnectionBurnTest is used to check the throughput of outgoing and incoming connections and report the results of execution to the log. During the test run, I noticed a couple of errors that actually prevent us from getting any results.

The NullPointerException is thrown during the test execution

java.lang.NullPointerException: null
	at org.apache.cassandra.metrics.ClientMetrics.unpauseConnection(ClientMetrics.java:69)
	at org.apache.cassandra.net.AbstractMessageHandler.onReserveCapacityRegained(AbstractMessageHandler.java:314)
	at org.apache.cassandra.net.AbstractMessageHandler.onGlobalReserveCapacityRegained(AbstractMessageHandler.java:289)
	at org.apache.cassandra.net.AbstractMessageHandler$WaitQueue$Ticket.reactivateHandler(AbstractMessageHandler.java:792)
	at org.apache.cassandra.net.AbstractMessageHandler$WaitQueue$ReactivateHandlers.run(AbstractMessageHandler.java:740)

The exception is swallowed and the test exits almost immediately, but the exception itself is not rethrown and the exit code is zero. The test is always green on CI, but a fatal exception has occurred;