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Flume >> mail # user >> NullPointerException : (Channel closed) on writeCheckpoint


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Re: NullPointerException : (Channel closed) on writeCheckpoint
Hi ! Thanks --- Here's my config

a1.sources = r1
a1.sinks = myFileSystem
a1.channels = c1

# Describe/configure the source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /root/xyz/flumeinput.tmp
a1.sources.r1.channels = c1
a1.sources = r1
a1.channels = c1
a1.sinks = k1
a1.sinks.k1.type = file_roll
a1.sinks.k1.channel = c1
a1.sinks.k1.sink.directory = /mnt/xyz/flume

#Do we need this?
agent1.sinks.sink1.hdfs.filePrefix = LogCreateTest

# Use a channel which buffers events in memory
a1.channels.c1.type = file
#a1.channels.c1.capacity = 100
#a1.channels.c1.transactionCapacity = 10

# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.myFileSystem.channel = c1

On Sun, May 12, 2013 at 8:57 AM, Alexander Alten-Lorenz <[EMAIL PROTECTED]
> wrote:

> Hi,
>
> Could you attach the config too?
>
> - Alex
>
> On May 11, 2013, at 11:52 PM, Jay Vyas <[EMAIL PROTECTED]> 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
>
>
--
Jay Vyas
http://jayunit100.blogspot.com