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https://issues.apache.org/jira/browse/NIFI-2078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400354#comment-15400354
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ASF GitHub Bot commented on NIFI-2078:
--------------------------------------
Github user ijokarumawak commented on a diff in the pull request:
https://github.com/apache/nifi/pull/563#discussion_r72879514
--- Diff:
nifi-nar-bundles/nifi-kafka-bundle/nifi-kafka-pubsub-processors/pom.xml ---
@@ -35,6 +35,10 @@
<artifactId>nifi-utils</artifactId>
</dependency>
<dependency>
+ <groupId>org.apache.nifi</groupId>
+ <artifactId>nifi-expression-language</artifactId>
--- End diff --
@JPercivall I agree, it does make sense to use EL subject-less functions.
EL functions can be used from Processor through interfaces provided by
nifi-api. But I needed an implementation StandardPropertyValue class to
evaluate EL from onAttributeModified method. I think we can not eval EL from
String. Can we?
> State management for processors whose states are managed externally
> -------------------------------------------------------------------
>
> Key: NIFI-2078
> URL: https://issues.apache.org/jira/browse/NIFI-2078
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Koji Kawamura
> Assignee: Koji Kawamura
> Fix For: 1.0.0
>
>
> Inherently by the nature of a given processor it may involve state managed by
> itself (using nifi state management), or can be managed by some external
> service it interacts with (kafka's offset), and theoretically some might have
> both going on. With the new state management, we're giving users a way to
> reset state managed by nifi for a given processor. But it doesnt apply to
> those processors who have external state.
> we should consider offering a way to reset state that allows a processor to
> call out to whatever external store it impacts
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