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https://issues.apache.org/jira/browse/NIFI-1527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15157358#comment-15157358
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ASF subversion and git services commented on NIFI-1527:
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Commit 122cba0ee79b7a9bfdded094c76bc14f76735ca6 in nifi's branch
refs/heads/master from [~markap14]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=122cba0 ]
NIFI-1527: Fixed issue that resulted in resource claims' claimant count getting
incremented twice on restart
Signed-off-by: joewitt <joew...@apache.org>
> 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
> Assignee: Mark Payne
> Priority: Blocker
> Fix For: 0.6.0, 0.5.1
>
> Attachments:
> 0001-NIFI-1527-Ensure-that-we-increment-Claimant-Counts-f.patch,
> 0001-NIFI-1527-Ensure-that-we-increment-Claimant-Counts-f.patch,
> 0001-NIFI-1527-Ensure-that-we-increment-Claimant-Counts-f.patch,
> 0001-NIFI-1527-Fixed-issue-that-resulted-in-resource-clai.patch
>
>
> 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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