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Flume, mail # user - FileChannel on Windows


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Re: FileChannel on Windows
Hari Shreedharan 2013-04-10, 19:08
This is due to a dependency on some hadoop classes. You should drop in the
hadoop-common jar file (download the hadoop-common binary and drop this jar
in) into the flume classpath. Though this is no longer used directly, there
is code which is meant to upgrade legacy format of the file channel - so
the jar is still needed.

Hari
On Wed, Apr 10, 2013 at 11:55 AM, Paul Chavez <
[EMAIL PROTECTED]> wrote:

> **
> Hello,
>
> I've been using flume on Windows to send logs to an avro source for awhile
> now, using the AvroClient class. I'm now trying to get a full agent running
> to hopefully leverage the spoolDir and httpSource functionality. Part of my
> requirements is a persistent channel so I'm attempting to get a config
> running the utilizes the fileChannel.
>
> I followed the instructions at
> http://mapredit.blogspot.com/2012/07/run-flume-13x-on-windows.html to
> build flume, same as I did for the AvroClient. However it seems I need some
> HDFS libraries. Can anyone point me to instructions for building the JAR(s)
> I need to get this working?
>
> Currently I'm running into the following exception:
> 10 Apr 2013 11:50:29,317 INFO  [lifecycleSupervisor-1-0]
> (org.apache.flume.channel.file.FileChannel.start:285)  - Starting
> FileChannel fc_Default { dataDirs: [c:\flume_data\log] }...
> 10 Apr 2013 11:50:29,317 ERROR [lifecycleSupervisor-1-0]
> (org.apache.flume.channel.file.FileChannel.start:314)  - Failed to start
> the file channel [channel=fc_Default]
> java.lang.NoClassDefFoundError: org/apache/hadoop/io/Writable
>  at java.lang.ClassLoader.defineClass1(Native Method)
>  at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
>  at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
>  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
>  at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
>  at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
>  at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
>  at java.security.AccessController.doPrivileged(Native Method)
>  at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>  at org.apache.flume.channel.file.Log$Builder.build(Log.java:212)
>  at org.apache.flume.channel.file.FileChannel.start(FileChannel.java:302)
>  at
> org.apache.flume.lifecycle.LifecycleSupervisor$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:886)
>  at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>  at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.io.Writable
>  at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>  at java.security.AccessController.doPrivileged(Native Method)
>  at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>  at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>  at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>  ... 24 more
> 10 Apr 2013 11:50:29,317 ERROR [lifecycleSupervisor-1-0]
> (org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run:238)  -