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https://issues.apache.org/jira/browse/FLUME-734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118581#comment-13118581
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Jonathan Hsieh commented on FLUME-734:
--------------------------------------
committed.
> escapedFormatDfs goes into a file creation frenzy
> -------------------------------------------------
>
> Key: FLUME-734
> URL: https://issues.apache.org/jira/browse/FLUME-734
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v0.9.4
> Environment: CentOS 5.6
> Reporter: Eran Kutner
> Assignee: Jonathan Hsieh
> Priority: Critical
> Fix For: v0.9.5
>
> Attachments:
> 0001-FLUME-734-escapedFormatDfs-goes-into-a-file-creation.patch,
> FLUME-734-draft.patch, flume.log
>
>
> Using this configuration:
> collectorSource(54001) | collector(600000) {
> escapedFormatDfs("hdfs://hadoop1-m1:8020/raw-events/%Y-%m-%d/",
> "events-%{rolltag}-col1.snappy", seqfile("SnappyCodec")) }
> The expected behavior is to see a new file created every 10 minutes. However,
> once in a while the collector would go into a file creation frenzy, creating
> new files every second.
> The log indicates that writing has failed with error: "OutputFormat instance
> can only write to the same OutputStream" causing the file to be closed a new
> one to be opened just to be closed again.
> Looking at the code I'm not even sure how the output stream could change but
> the behavior I'm seeing feels like some sort of a race condition. It is
> happening much more under heavy load than under low load.
> See attached log excerpt.
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