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https://issues.apache.org/jira/browse/NIFI-2006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329633#comment-15329633
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Christopher McDermott commented on NIFI-2006:
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[~ozhurakousky], I don't believe that this is the same issue as NIFI-2015.
There is no NPE in that case rather it raises an ISE when checking for the
FlowFile UUID. Maybe the fix is the same but on the surface it seems quite
different.
> Null attribute values causing NPEs in provenance repo
> -----------------------------------------------------
>
> Key: NIFI-2006
> URL: https://issues.apache.org/jira/browse/NIFI-2006
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Brandon DeVries
> Assignee: Oleg Zhurakousky
> Priority: Critical
> Fix For: 1.0.0, 0.7.0
>
>
> A null attribute value (as you would see for a removed attribute) causes the
> provenance repo to thrown an NPE here:
> https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-provenance-repository-bundle/nifi-persistent-provenance-repository/src/main/java/org/apache/nifi/provenance/PersistentProvenanceRepository.java#L1789
> (as "entry.getValue()" is null...)
> suggested fix is to change:
> {code}
> if (entry.getValue().length() > maxAttributeChars) {
> {code}
> to:
> {code}
> if (entry.getValue() != null && entry.getValue().length() >
> maxAttributeChars) {
> {code}
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