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https://issues.apache.org/jira/browse/FLUME-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13888480#comment-13888480
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Ashish Paliwal commented on FLUME-2308:
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Does this link helps http://flume.apache.org/FlumeDeveloperGuide.html#source
> Document requirements for custom source
> ---------------------------------------
>
> Key: FLUME-2308
> URL: https://issues.apache.org/jira/browse/FLUME-2308
> Project: Flume
> Issue Type: Improvement
> Components: Docs
> Reporter: Joshua Hyde
> Priority: Minor
>
> I implemented my own custom source that extends
> {{org.apache.flume.source.AbstractSource}}; to my surprise, however, I saw
> this in my logs:
> {noformat}
> 31 Jan 2014 15:40:11,289 ERROR [conf-file-poller-0]
> (org.apache.flume.node.AbstractConfigurationProvider.loadSources:366) -
> Source basset_source has been removed due to an error during configuration
> java.lang.IllegalArgumentException: No known runner type for source
> com.example.MySource{name:basset_source,state:IDLE}
> at org.apache.flume.SourceRunner.forSource(SourceRunner.java:54)
> at
> org.apache.flume.node.AbstractConfigurationProvider.loadSources(AbstractConfigurationProvider.java:355)
> 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:744)
> {noformat}
> The solution, it appears, is mentioned in [this StackOverflow
> question|http://stackoverflow.com/questions/13201893/flume-1-2-0-custom-source/13202095#13202095]:
> {quote}i think i figured it out. The documentation on the Flume website does
> not mention a custom implementation should implement not the Source interface
> but either the EventDrivenSource or PollableSource interface.
> {quote}
> It would be helpful if this was, as mentioned, written in the user-facing
> documentation. :)
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