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https://issues.apache.org/jira/browse/FLUME-1665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481325#comment-13481325
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Denny Ye commented on FLUME-1665:
---------------------------------
When Flume process was going to stop and shutdown hook has been invoked, it's
always useful to avoid the duplicated events.
> Data from FileChannel will be duplicated when restarting configuration
> ----------------------------------------------------------------------
>
> Key: FLUME-1665
> URL: https://issues.apache.org/jira/browse/FLUME-1665
> Project: Flume
> Issue Type: Bug
> Components: Channel
> Affects Versions: v1.2.0, v1.3.0
> Reporter: Denny Ye
> Labels: FileChannel
>
> When Flume process was running, I changed configuration property and Flume
> rebooted without process restarting. Events will be duplicated in next loop,
> also has been consumed before all components have stopped.
> I found the root cause. When FileChannel was stopping, it should save the
> 'inflightPuts' and 'inflightTakes' into disk for preparing in next loop.
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