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While playing with XrdEc, I ran into an issue that when a file is really large, and require putting more than 32k chunks in backend .zip archives, I can't read them back. If this very large file itself is a non-zip file, xrdcp (with XrdEc config loaded) will get:

Run: [ERROR] Received corrupted data: End-of-central-directory signature not found. (source)

If this very large file is a .zip file, xrdcp will crash.

Furthermore, if I go to the backend data servers that host those corresponding zip archives, and trying to unzip them, unzip will complain:

End-of-central-directory signature not found.

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