[CASSANDRA-12806] NullPointerException thrown in org.apache.cassandra.client.TestRingCache

• Type: Bug
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 3.0.x
• Component/s: Legacy/Testing
• Severity: Normal
• Since Version: 3.9
• Assignee: Unassigned
• Reporter: Lynch Lee
• Tester: Lynch Lee
• Created: 19/Oct/16 06:07
• Updated: 16/Apr/19 09:30

Description

While I run testing org.apache.cassandra.client.TestRingCache in my Idea, I got this exception:

 
Exception in thread "main" java.lang.NullPointerException
	at org.apache.cassandra.hadoop.ConfigHelper.setOutputKeyspace(ConfigHelper.java:119)
	at org.apache.cassandra.hadoop.ConfigHelper.setOutputColumnFamily(ConfigHelper.java:142)
	at org.apache.cassandra.client.TestRingCache.<init>(TestRingCache.java:50)
	at org.apache.cassandra.client.TestRingCache.main(TestRingCache.java:98)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Code shown:
in Constructor of TestRingCache:

 
ConfigHelper.setOutputColumnFamily(conf, keyspace, "Standard1");

when varible conf haven't be initialized.