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From "Mark Payne (JIRA)" <>
Subject [jira] [Commented] (NIFI-994) Processor to tail files
Date Wed, 28 Oct 2015 14:53:27 GMT


Mark Payne commented on NIFI-994:


Yes, we are currently using a Checksum in order to ensure that if the file changes that we
have all of the data necessary. If the checksum is different, then we know that the file has
not been ingested and pull in all of the data. If the checksums are the same then we know
that our position within the file is good.

> Processor to tail files
> -----------------------
>                 Key: NIFI-994
>                 URL:
>             Project: Apache NiFi
>          Issue Type: New Feature
>    Affects Versions: 0.4.0
>            Reporter: Joseph Percivall
>            Assignee: Mark Payne
>             Fix For: 0.4.0
>         Attachments: 0001-NIFI-994-Initial-import-of-TailFile.patch
> 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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