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https://issues.apache.org/jira/browse/NIFI-7469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17155524#comment-17155524
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ASF subversion and git services commented on NIFI-7469:
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Commit 1fc25db47cdecef404548ac011de2c2564574932 in nifi's branch
refs/heads/main from Mark Payne
[ https://gitbox.apache.org/repos/asf?p=nifi.git;h=1fc25db ]
NIFI-7469: Updated RepositoryRecord to include flag indicating whether or not
the content of a FlowFile was modified. This allows us to explicitly keep track
of this state rather than implying it (potentially incorrectly).
This closes #4399.
> Processors that write zero-byte content may cause Content Repository Cleanup
> to fail
> ------------------------------------------------------------------------------------
>
> Key: NIFI-7469
> URL: https://issues.apache.org/jira/browse/NIFI-7469
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.10.0, 1.11.0, 1.11.1, 1.11.4
> Environment: Windows 10, ubuntu 18.04
> Reporter: Stefano Piana
> Assignee: Mark Payne
> Priority: Blocker
> Fix For: 1.12.0
>
> Attachments: ReplaceTextBug.xml
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Trying to replace an empty flowfile with and empty value may cause the
> content repository
> to accumulate and not being correctly cleaned up until the next NiFi restart.
> this behaviour has been observed on nifi 1.10+
> to reproduce the problem just generate a flowfile that has some content, then
> replace the content with the ReplaceText processor setting it to always
> replace and set the replacement to empty string. Copy the ReplaceText
> processor and try replacing the content with an empty string again, then just
> use any processor to drain the flowfiles. This will cause the content
> repository to accumulate and stop being correctly cleaned up.
> here attached a simple flow that reproduces the problem.
>
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