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https://issues.apache.org/jira/browse/FLUME-1246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13287481#comment-13287481
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Hari Shreedharan commented on FLUME-1246:
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Juhani:
The same issue can be found in RecoverableMemoryChannel and HDFSEventSink. I
was about to suggest this, but thought you had Hadoop in the class path. The
reason it tries to load is because it tries to create the class object for
FileChannel(using Class.forName()), during which it tries to load all its
internal member classes.
> 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-hari-2012May312217PST.log, flume.log, flume.log,
> flume.log, flume.log.20120601, test_conf.conf
>
>
> 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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