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Date: Fri, 7 Mar 2014 15:50:44 +0000 (UTC)
From: "Nicolas Favre-Felix (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.12699445.1394207421615.24005.1394207444398@arcas>
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Subject: [jira] [Created] (CASSANDRA-6820) NPE in MeteredFlusher.run
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Nicolas Favre-Felix created CASSANDRA-6820:
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             Summary: NPE in MeteredFlusher.run
                 Key: CASSANDRA-6820
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6820
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Nicolas Favre-Felix
            Priority: Minor


Hello,

I've been seeing this exception with Cassandra 2.0.5:

{code}
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)
{code}

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


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