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https://issues.apache.org/jira/browse/NIFI-4326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16144186#comment-16144186
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ASF GitHub Bot commented on NIFI-4326:
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Github user btwood commented on the issue:
https://github.com/apache/nifi/pull/2111
getAllRecipients() will also throw an Empty Address exception. This causes
blank addresses (<>, or "") to also not be parsed correctly.
> ExtractEmailHeaders.java unhandled NullPointerException
> -------------------------------------------------------
>
> Key: NIFI-4326
> URL: https://issues.apache.org/jira/browse/NIFI-4326
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.3.0
> Reporter: Benjamin Wood
> Priority: Minor
> Original Estimate: 0.5h
> Remaining Estimate: 0.5h
>
> The ExtractEmailHeaders processor throws a NullPointerException if there is
> no TO, CC, and BCC recipients.
> If there are no recipients "originalMessage.getAllRecipients()" returns NULL,
> and not a 0 length array.
> I've already written a patch and submitted it to github as pull request #2111
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