[jira] [Resolved] (FLUME-2308) Document requirements for custom source

["Ashish Paliwal (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLUME-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ashish Paliwal resolved FLUME-2308.
-----------------------------------

       Resolution: Not A Problem
    Fix Version/s: v1.5.0

The information is present in Developer Guide

> 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
>             Fix For: v1.5.0
>
>
> 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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