Christoph Langheld created NIFI-8612:
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             Summary: UnpackContent is unable to extract zip files when file 
filter is specified
                 Key: NIFI-8612
                 URL: https://issues.apache.org/jira/browse/NIFI-8612
             Project: Apache NiFi
          Issue Type: Bug
    Affects Versions: 1.13.2
            Reporter: Christoph Langheld
         Attachments: image-2021-05-18-11-33-59-379.png, testzip.zip

For _some_ zip files, NiFi is not able to extract only files specified by File 
Filter RegExp.

NiFi then returns the following error:
2021-05-18 11:28:00,122 ERROR [Timer-Driven Process Thread-4] 
o.a.n.processors.standard.UnpackContent 
UnpackContent[id=7e1da1e1-0179-1000-c6a6-548eb16bc846] Unable to unpack 
StandardFlowFileRecord[uuid=368f9c00-fddc-42b2-8763-5ba59c05a54d,claim=StandardContentClaim
 [resourceClaim=StandardResourceClaim[id=1621328644854-1, container=default, 
section=1], offset=0, length=300],offset=0,name=testzip02.zip,size=300] because 
it does not appear to have any entries; routing to failure

Configuration of UnpackContent processor:
!image-2021-05-18-11-33-59-379.png|width=440,height=203!

I attached a zip file to reproduce:
[^testzip.zip]

NiFi 1.11.4 had no problems with those files.



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