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https://issues.apache.org/jira/browse/NIFI-11?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16093310#comment-16093310
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ASF GitHub Bot commented on NIFI-11:
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Github user asfgit closed the pull request at:
https://github.com/apache/nifi/pull/1644
> UpdateAttribute should penalize & roll back FlowFiles for which Expression
> Language fails to evaluate
> -----------------------------------------------------------------------------------------------------
>
> Key: NIFI-11
> URL: https://issues.apache.org/jira/browse/NIFI-11
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Gilman
> Assignee: Andre F de Miranda
> Priority: Minor
> Fix For: 1.4.0
>
>
> For example, if using ${filename:substring(1, 20)} and the filename is only
> 15 characters, this will throw an Exception, which causes UpdateAttribute to
> yield and not penalize the FlowFile. Instead, it should catch this Exception
> and rollback with penalization and NOT yield, as this is a problem with the
> data, not a problem with the processor's ability to function at this moment.
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