[jira] [Created] (SLING-5702) SlingFileUploadHandler creates unnecessary chunk when upload part is empty

["Stefan Egli (JIRA)" <ji...@apache.org>]

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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