Stefan Egli created SLING-5702:
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Summary: SlingFileUploadHandler creates unnecessary chunk when
upload part is empty
Key: SLING-5702
URL: https://issues.apache.org/jira/browse/SLING-5702
Project: Sling
Issue Type: Bug
Components: Servlets
Affects Versions: Servlets Post 2.3.10
Reporter: Stefan Egli
Fix For: Servlets Post 2.3.12
SlingFileUploadHandler in
[{{processChunk}}|https://github.com/apache/sling/blob/ded7f8d657ff54711d6e9bd7d6f76cca67c89df6/bundles/servlets/post/src/main/java/org/apache/sling/servlets/post/impl/helper/SlingFileUploadHandler.java#L311]
can create an oddly formatted chunk when {{value.getSize()}==0}} - ie when an
upload doesn't actually upload anything. This has been seen in a production
case. It's not yet clear why {{processChunk}} is called with a data length of
zero.
The result is that you'll have a chunk named '{{chunk_n_n-1}}' which later on
causes troubles when running the {{ChunkCleanUpTask}} (see SLING-5701).
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