[CASSANDRA-17347] Instance failed to start up due to NPE in StartupClusterConnectivityChecker

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.1-alpha1, 4.1
• Component/s: Observability/Logging
• Bug Category: Code
• Severity: Low
• Complexity: Low Hanging Fruit
• Discovered By: User Report
• Platform: All
• Since Version: 5.0

Source Control Link

https://github.com/apache/cassandra/commit/543608ba39d5803b963d14821abe193ff0796b4f

Test and Documentation Plan

ci build run

• Assignee: Francisco Guerrero
• Reporter: Francisco Guerrero

Authors

Francisco Guerrero

Reviewers

Stefan Miklosovic, Yifan Cai

• Created: 04/Feb/22 00:58
• Updated: 07/Mar/23 11:52
• Resolved: 09/Feb/22 18:25

Description

Instance is crashing during startup due to a NPE in StartupClusterConnectivityChecker with stack trace:

java.lang.NullPointerException: element cannot be mapped to a null key
        at java.util.Objects.requireNonNull(Objects.java:228)
        at java.util.stream.Collectors.lambda$groupingBy$45(Collectors.java:907)
        at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
        at org.apache.cassandra.net.StartupClusterConnectivityChecker.execute(StartupClusterConnectivityChecker.java:173)

Issue Links

• is caused by: CASSANDRA-17130 Log missing peers in StartupClusterConnectivityChecker