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https://issues.apache.org/jira/browse/FLUME-1246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287075#comment-13287075
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Juhani Connolly commented on FLUME-1246:
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yeah, the timetamp interceptor from mine is actually also a custom one, sorry. 
I did think afterwards it may be somehow related so removed it, but the problem 
persisted.

I'm going to try to track down where the exceptions aren't getting logged and 
work from there
                
> FileChannel failing to  start, also shutdown impossible without kill
> --------------------------------------------------------------------
>
>                 Key: FLUME-1246
>                 URL: https://issues.apache.org/jira/browse/FLUME-1246
>             Project: Flume
>          Issue Type: Bug
>          Components: Channel
>    Affects Versions: v1.2.0
>         Environment: CentOS 5.4
>            Reporter: Juhani Connolly
>         Attachments: flume.log, flume.log
>
>
> Reduced to a minimal configuration for simplicity. I can recreate this on 
> some machines, and not others. I wouldn't be surprised if it is some machines 
> specific issue(test machines on CentOS5.4. On some it worked, others not), 
> however whatever exception was thrown when attempting to get created is 
> consumed and never passed onwards
> Config:
> test.channels.ch1.type = file
> test.channels.ch1.checkpointDir = 
> /home/share/juhani_connolly/flume-1.2.0-incubating-SNAPSHOT/check
> test.channels.ch1.dataDirs = 
> /home/share/juhani_connolly/flume-1.2.0-incubating-SNAPSHOT/filechdata
> test.sources.top.type = exec
> test.sources.top.command = /usr/bin top -b -d 1
> test.sources.top.restart = true
> test.sources.top.restartThrottle = 1000
> test.sources.top.interceptors = ts
> test.sources.top.interceptors.ts.type = 
> org.apache.flume.interceptor.TimestampInterceptor$Builder
> test.sources.top.channels = ch1
> test.sinks.log.type = logger
> test.sinks.log.channel = ch1
> test.channels = ch1
> test.sources = top
> test.sinks = log
> attaching logs with general/lifecycle loglevel down to debug.
> A solution to this is probably going to be just improving error reporting.
> Another possibly more important element is that flume enters a state from 
> which it cannot shutdown without kill -9. It looks like the Interrupts are 
> getting swallowed up silently somewhere

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