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https://issues.apache.org/jira/browse/NIFI-4805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16651070#comment-16651070
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ASF GitHub Bot commented on NIFI-4805:
--------------------------------------

GitHub user patricker opened a pull request:

    https://github.com/apache/nifi/pull/3078

    NIFI-4805 Allow Delayed Transfer

    Went looking for this processor, found a work around, and found that others 
had already discussed building one throughout 2018 (see ticket/email thread 
from today, October 15th).
    
    Happy to make changes, feedback welcome.
    
    ### For all changes:
    - [x] Is there a JIRA ticket associated with this PR? Is it referenced 
         in the commit message?
    
    - [x] Does your PR title start with NIFI-XXXX where XXXX is the JIRA number 
you are trying to resolve? Pay particular attention to the hyphen "-" character.
    
    - [x] Has your PR been rebased against the latest commit within the target 
branch (typically master)?
    
    - [x] Is your initial contribution a single, squashed commit?
    
    ### For code changes:
    - [ ] Have you ensured that the full suite of tests is executed via mvn 
-Pcontrib-check clean install at the root nifi folder?
    - [ ] Have you written or updated unit tests to verify your changes?
    - [ ] If adding new dependencies to the code, are these dependencies 
licensed in a way that is compatible for inclusion under [ASF 
2.0](http://www.apache.org/legal/resolved.html#category-a)? 
    - [ ] If applicable, have you updated the LICENSE file, including the main 
LICENSE file under nifi-assembly?
    - [ ] If applicable, have you updated the NOTICE file, including the main 
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    - [ ] If adding new Properties, have you added .displayName in addition to 
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    ### For documentation related changes:
    - [ ] Have you ensured that format looks appropriate for the output in 
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    ### Note:
    Please ensure that once the PR is submitted, you check travis-ci for build 
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You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/patricker/nifi NIFI-4805

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/nifi/pull/3078.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #3078
    
----
commit badfe8651651e5cefe1d2447458ff43be7ba0cdc
Author: patricker <patricker@...>
Date:   2018-10-16T02:55:20Z

    NIFI-4805 Allow Delayed Transfer

----


> allow delayed transfer
> ----------------------
>
>                 Key: NIFI-4805
>                 URL: https://issues.apache.org/jira/browse/NIFI-4805
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>            Reporter: Martin Mucha
>            Assignee: Peter Wicks
>            Priority: Minor
>         Attachments: retry.xml
>
>
> Nifi has concept of penalization, but this penalization has fixed delay, and 
> there isn't way how to change it dynamically. 
> If we want to implement retry flow, where FlowFile flows in loop, we can 
> either lower performance of Processor via yielding it, or we can do active 
> waiting. And this is actually recommended as a correct way how to do that.
> It seems, that we can easily implement better RetryProcessor, all we missing 
> is `session.penalize` which accepts `penalizationPeriod`. Processor then can 
> gradually prolong waiting time after each failure.
>  
> Would it be possible to make such method visible?



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