Github user ottobackwards commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2800#discussion_r195934504
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/PutEmail.java
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@@ -320,6 +320,15 @@ public void onScheduled(final ProcessContext context) {
this.attributeNamePattern = attributeNameRegex == null ? null :
Pattern.compile(attributeNameRegex);
}
--- End diff --
We should include the header name in the message
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