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From "Joseph Witt (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (NIFI-259) Framework should offer Processors/extensions a way to manage simple state
Date Sun, 07 Feb 2016 21:14:40 GMT

     [ https://issues.apache.org/jira/browse/NIFI-259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joseph Witt updated NIFI-259:
-----------------------------
    Labels: migration  (was: )

> Framework should offer Processors/extensions a way to manage simple state
> -------------------------------------------------------------------------
>
>                 Key: NIFI-259
>                 URL: https://issues.apache.org/jira/browse/NIFI-259
>             Project: Apache NiFi
>          Issue Type: Sub-task
>          Components: Core Framework
>            Reporter: Joseph Witt
>            Assignee: Mark Payne
>              Labels: migration
>             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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