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From "ASF subversion and git services (JIRA)" <>
Subject [jira] [Commented] (NIFI-259) Framework should offer Processors/extensions a way to manage simple state
Date Wed, 03 Feb 2016 21:36:40 GMT


ASF subversion and git services commented on NIFI-259:

Commit 72c8467b9f2d64d0d441331851dc23f25e927736 in nifi's branch refs/heads/NIFI-259 from
[;h=72c8467 ]

- Addressing typo in documentation.
- Minor tweaks to admin guide.
- Adding support to stand up a ZooKeeperServer when a quorum peer is not distributed (ie supporting
both embedded standalone and cluster).

Signed-off-by: Aldrin Piri <>

> Framework should offer Processors/extensions a way to manage simple state
> -------------------------------------------------------------------------
>                 Key: NIFI-259
>                 URL:
>             Project: Apache NiFi
>          Issue Type: Sub-task
>          Components: Core Framework
>            Reporter: Joseph Witt
>            Assignee: Mark Payne
>             Fix For: 0.5.0
>         Attachments: error-message.png
> It is not uncommon for processors to need managed state which  persists across restarts.
 One good example of this is the GetHTTP processor which needs to save state of the last cache/e-tag
information it received from the server it interacts with so that it can avoid constantly
pulling an unchanged resource.
> Rather than making processors roll their own persistant state management perhaps we can
offer something to them via the ProcessContext which will allow them to save simple primitive
values and limited length Strings which are local to that node and which are local to that
processor only.

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