Mark Payne created NIFI-6832:
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Summary: Site-to-Site should not create a Content Claim for 0-byte
FlowFiles
Key: NIFI-6832
URL: https://issues.apache.org/jira/browse/NIFI-6832
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Reporter: Mark Payne
Assignee: Mark Payne
When FlowFiles are received via Site-to-Site, it creates a FlowFile and then
writes the content from the InputStream to the FlowFile. However, if the
FlowFile is 0 bytes, it should avoid every calling `ProcessSession.write`.
Doing so has the overhead of seeking to the appropriate place on disk to begin
writing, but more importantly it ties the FlowFile to the underlying
ResourceClaim. As a result, we have a 0 byte FlowFile that can prevent a
(potentially large) Content Claim from being cleaned up, until the 0 byte
FlowFile has been dropped.
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