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https://issues.apache.org/jira/browse/NIFI-4718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon DeVries updated NIFI-4718:
----------------------------------
    Description: 
IdentifyMimeType uses tika configured with a custom-mimetypes.xml\[1] to 
specify (among others) the flowfile-v* mime types.  However, these do not 
include priorities.  Therefore, a NiFi FlowFile V3 package with a payload 
containing, for example, html including the string:
{code}
<html xmlns=
{code}
will be identified as "application/xhtml+xml" \[2] which, while matching the 
pattern, is not as correct as identifying it as application/flowfile-v3.  To 
fix this, I believe we need to specify a higher priority for the FlowFile V3 
"magic"...

\[1] 
https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/org/apache/tika/mime/custom-mimetypes.xml#L26-L31
\[2] 
https://gitbox.apache.org/repos/asf?p=tika.git;a=blob;f=tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml;hb=refs/heads/master

  was:
IdentifyMimeType uses tika configured with a custom-mimetypes.xml\[1] to 
specify (among others) the flowfile-v* mime types.  However, these do not 
include priorities.  Therefore, a NiFi FlowFile V3 package with a payload 
containing, for example, html including the string:
{code}
<html xmlns=
{code}
will be identified as "application/xhtml+xml" \[2] which, while matching the 
pattern, is not as correct as identifying it as application/flowfile-v3.  To 
fix this, I believe we need to specify a higher priority for the FlowFile V3 
"magic"...

\[1] 
https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/org/apache/tika/mime/custom-mimetypes.xml#L26-L31
\2] 
https://gitbox.apache.org/repos/asf?p=tika.git;a=blob;f=tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml;hb=refs/heads/master


> IdentifyMimeType: increase priority for FFv3
> --------------------------------------------
>
>                 Key: NIFI-4718
>                 URL: https://issues.apache.org/jira/browse/NIFI-4718
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>            Reporter: Brandon DeVries
>            Priority: Minor
>
> IdentifyMimeType uses tika configured with a custom-mimetypes.xml\[1] to 
> specify (among others) the flowfile-v* mime types.  However, these do not 
> include priorities.  Therefore, a NiFi FlowFile V3 package with a payload 
> containing, for example, html including the string:
> {code}
> <html xmlns=
> {code}
> will be identified as "application/xhtml+xml" \[2] which, while matching the 
> pattern, is not as correct as identifying it as application/flowfile-v3.  To 
> fix this, I believe we need to specify a higher priority for the FlowFile V3 
> "magic"...
> \[1] 
> https://github.com/apache/nifi/blob/master/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/org/apache/tika/mime/custom-mimetypes.xml#L26-L31
> \[2] 
> https://gitbox.apache.org/repos/asf?p=tika.git;a=blob;f=tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml;hb=refs/heads/master



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