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From "Mark Payne (JIRA)" <>
Subject [jira] [Updated] (NIFI-1877) FirstInFirstOut prioritizer does not work.
Date Mon, 20 Jun 2016 14:16:05 GMT


Mark Payne updated NIFI-1877:
    Fix Version/s: 1.0.0

> FirstInFirstOut prioritizer does not work.
> ------------------------------------------
>                 Key: NIFI-1877
>                 URL:
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 0.6.1
>            Reporter: Matthew Clarke
>             Fix For: 1.0.0
> The FirstInFirstOut (FIFO) prioritizer has no guarantee of actually working on queued
FlowFile in a FIFO order.  The reliance on lastQueuedDate or time is not sufficient to guarantee
order as FlowFile processed as batched will all have the same exact timestamp.  There is also
inconsistency in how processors update lastQueuedDate. If a processor passes a FlowFile through
without any change, Date is not updated.  This in turn affects the processing order of FlowFiles.
We are finding that more and more NiFI users have specific file processing order needs.

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