[CASSANDRA-6820] NPE in MeteredFlusher.run

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.0.7
• Severity: Low
• Assignee: Nicolas Favre-Felix
• Reporter: Nicolas Favre-Felix

Authors

Nicolas Favre-Felix

Reviewers

Jonathan Ellis

• Created: 07/Mar/14 15:50
• Updated: 16/Apr/19 09:31
• Resolved: 22/Mar/14 03:01

Description

Hello,

I've been seeing this exception with Cassandra 2.0.5:

ERROR 15:41:46,754 Exception in thread Thread[OptionalTasks:1,5,main]
java.lang.NullPointerException
	at org.apache.cassandra.db.MeteredFlusher.run(MeteredFlusher.java:40)
	at org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:75)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)

Could it be that Memtable.activelyMeasuring becomes null right after the test?