title: Flume fails on config file
body: <p>I have some code I inherited and there is little documentation. The system keeps failing on various errors. It seems to me it is not reading the jar files and I am not even sure where it is looking. Here is the error below. Can anyone offer any advice?</p>
  
  <pre><code>     - Creating instance of source Twitter, type uk.co.senym.flume.TweetDataSource
      13 Dec 2013 15:29:55,923 ERROR [conf-file-poller-0](org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run:142)  - Failed to load configuration data. Exception follows.
      org.apache.flume.FlumeException: Unable to load source type: uk.co.senym.flume.TweetDataSource, class: uk.co.senym.flume.TweetDataSource
      at org.apache.flume.source.DefaultSourceFactory.getClass(DefaultSourceFactory.java:67)
      at org.apache.flume.source.DefaultSourceFactory.create(DefaultSourceFactory.java:40)
      at org.apache.flume.node.AbstractConfigurationProvider.loadSources(AbstractConfigurationProvider.java:327)
      at org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:102)
      at org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:140)
      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:724)
  Caused by: java.lang.ClassNotFoundException: uk.co.senym.flume.TweetDataSource
      at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
      at java.lang.Class.forName0(Native Method)
      at java.lang.Class.forName(Class.java:190)
      at                                         org.apache.flume.source.DefaultSourceFactory.getClass(DefaultSourceFactory.java:65)
      ... 11 more
  </code></pre>