Mark Payne created NIFI-1527:
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Summary: Resource Claim counts not incremented on restart for
FlowFiles that are swapped out
Key: NIFI-1527
URL: https://issues.apache.org/jira/browse/NIFI-1527
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Reporter: Mark Payne
Priority: Blocker
Fix For: 0.6.0
When NiFi starts, it tallies the count of how many FlowFiles reference each
Resource Claim and then removes or archives any file in the Content Repository
for which there is no claim.
However, the claim counts are not incremented for data that is swapped out. As
a result, the content repository could delete or archive data on restart that
it should not. This could potentially result in data loss, if NiFi is restarted
while both of the following conditions are met:
* All FlowFiles that reference a Resource Claim are swapped out
* Content Repository's archive is disabled, or the archival threshold is
already exceeded from data outside of the Content Repository
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