[CASSANDRA-15383] Unable to init Verb in jvm-dtest

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-alpha3, 4.0
• Component/s: Test/dtest/java
• Platform: All
• Since Version: 4.0-alpha

Source Control Link

f05cf4f21a938bffea27b9d31e1fb79f37c44e81

Test and Documentation Plan

n/a: test fix

• Assignee: Benedict Elliott Smith
• Reporter: Yifan Cai

Authors

Benedict Elliott Smith

Reviewers

Benedict Elliott Smith

• Created: 29/Oct/19 06:53
• Updated: 21/Dec/20 08:08
• Resolved: 29/Oct/19 11:11

Description

Verb cannot be initialized in dtest. The test cases that has references to Verb get the following error

java.lang.ExceptionInInitializerError
	at org.apache.cassandra.net.Verb.<clinit>(Verb.java:87)
	at org.apache.cassandra.distributed.test.DistributedReadWritePathTest.failingReadRepairTest(DistributedReadWritePathTest.java:134)
Caused by: java.lang.NullPointerException
	at org.apache.cassandra.config.DatabaseDescriptor.getConcurrentReaders(DatabaseDescriptor.java:1611)
	at org.apache.cassandra.concurrent.Stage.<clinit>(Stage.java:48)

It is caused by the DatabaseDescriptor being uninitialized and NPE was thrown. The dtest initializes the DatabaseDescriptor at instance-level with the isolated InstanceClassLoader. Since test code is not loaded by the InstanceClassLoader, it does not know the already initialized DatabaseDescriptor.