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https://issues.apache.org/jira/browse/CASSANDRA-9730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Benedict resolved CASSANDRA-9730.
---------------------------------
    Resolution: Fixed

This should already be fixed, as of the CASSANDRA-9656 followups. Closing, but 
of course re-open if you're still having problems.

> Flappy NPE when starting C* on trunk
> ------------------------------------
>
>                 Key: CASSANDRA-9730
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9730
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Robert Stupp
>            Assignee: Benedict
>
> The following exception occurs approx. 50% of the time when C* is restarted 
> after a clean install.
> {noformat}
> ERROR 09:02:19 Exception in thread Thread[NonPeriodicTasks:1,5,main]
> java.lang.NullPointerException: null
>       at 
> org.apache.cassandra.io.sstable.SSTableRewriter$InvalidateKeys.run(SSTableRewriter.java:264)
>  ~[main/:na]
>       at 
> org.apache.cassandra.io.sstable.format.SSTableReader$InstanceTidier$1.run(SSTableReader.java:2084)
>  ~[main/:na]
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[na:1.8.0_45]
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
> ~[na:1.8.0_45]
>       at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
>  ~[na:1.8.0_45]
>       at 
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>  ~[na:1.8.0_45]
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  ~[na:1.8.0_45]
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_45]
>       at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
> {noformat}
> Steps to reproduce:
> {noformat}
> git checkout trunk
> ant ...
> bin/cassandra
> (kill cassandra daemon)
> bin/cassandra
> {noformat}



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