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https://issues.apache.org/jira/browse/FLUME-2829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14975591#comment-14975591
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Andre commented on FLUME-2829:
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[~iijima_satoshi], what do you reckon?
> Taildir Source doesn't populate Filename
> -----------------------------------------
>
> Key: FLUME-2829
> URL: https://issues.apache.org/jira/browse/FLUME-2829
> Project: Flume
> Issue Type: Improvement
> Components: Sinks+Sources
> Affects Versions: v1.7.0
> Reporter: Andre
>
> JIRA issue FLUME-2498 mentions taildir source should be able to populate
> Filename key in the header, however, this doesn't seem to be available yet.
> Moreover, given the near certainty of taildir sources being used to tail
> dynamic filenames such as {{$hostname-$year-$month-$day.log}} it would be
> great to expose the regex groups to the generated headers in a fashion
> similar to the Regex Extractor Interceptor:
> {code}
> a1.sources.r1.filegroups.f1 =
> /path/to/my/logfile/([^-]+)-([^-]+)-([^-]+)-([^-]+).log
> a1.sources.r1.filegroups.f1.regexgroups = s1 s2 s3 s4
> a1.sources.r1.filegroups.f1.regexgroups.s1.header = hostname
> a1.sources.r1.filegroups.f1.regexgroups.s2.header = year
> a1.sources.r1.filegroups.f1.regexgroups.s3.header = month
> a1.sources.r1.filegroups.f1.regexgroups.s4.header = day
> {code}
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