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https://issues.apache.org/jira/browse/NIFI-994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905759#comment-14905759
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Randy Gelhausen commented on NIFI-994:
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A good test case is:
Start tailing processor pointing at /var/log/app.log
Stop tailing processor
Allow logrotate to rotate /var/log/app.log
Start tailing processor
Expected Result:
Emit line 1
Emit line 2
Emit line 3
etc.
Essentially the processor needs to resume emitting from where it left off in
the sequence of log-lines. It should handle recognizing where it left off, read
any available rotation archives (app.log.1, app.log.2, etc.) in order, and then
catch back up emitting from the live app.log file.
> Processor to tail files
> -----------------------
>
> Key: NIFI-994
> URL: https://issues.apache.org/jira/browse/NIFI-994
> Project: Apache NiFi
> Issue Type: New Feature
> Affects Versions: 0.4.0
> Reporter: Joseph Percivall
>
> It's a very common data ingest situation to want to input text into the
> system by "tailing" a file, most commonly log files. Currently we don't have
> an easy way to do this.
> A simple processor to tail a file would benefit many users. There would need
> to be an option to not just tail a file but pick up where the processor left
> off if it is interrupted.
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