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From Alexander Alten-Lorenz <wget.n...@gmail.com>
Subject Re: NullPointerException : (Channel closed) on writeCheckpoint
Date Sun, 12 May 2013 12:57:31 GMT
Hi,

Could you attach the config too?

- Alex

On May 11, 2013, at 11:52 PM, Jay Vyas <jayunit100@gmail.com> wrote:

> Hi flume : 
> 
> I've setup a file to file source/sink , just as a test.  Im using the exec source, with
tail -F to follow a simple tmp file that is being catted to. 
> 
> However, I've started seeing the following exception in the flume logs: 
> 
> java.lang.
> IllegalStateException: Channel closed [channel=c1]. Due to java.lang.NullPointerException:
null
>     at org.apache.flume.channel.file.FileChannel.createTransaction(FileChannel.java:353)
>     at org.apache.flume.channel.BasicChannelSemantics.getTransaction(BasicChannelSemantics.java:122)
>     at org.apache.flume.sink.RollingFileSink.process(RollingFileSink.java:183)
>     at org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>     at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>     at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NullPointerException
>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:895)
>     at org.apache.flume.channel.file.Log.replay(Log.java:406)
>     at org.apache.flume.channel.file.FileChannel.start(FileChannel.java:303)
>     at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:236)
>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
>     at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
>     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
>     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
>     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:180)
>     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:204)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
>     ... 1 more
> 
> Any thoughts on where this NullPointerException is coming from?  It appears from scanning
the code that maybe it related to a missing folder or directory.  But I cant find the exact
line on the git hub branches.
> 
> This is using apache-flume-1.3.1.23-...
> 
> 
> -- 
> Jay Vyas
> http://jayunit100.blogspot.com

--
Alexander Alten-Lorenz
http://mapredit.blogspot.com
German Hadoop LinkedIn Group: http://goo.gl/N8pCF


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