Annex content download fails silently leading to incomplete zip files

[mpsonntag]

It happened a couple of times now, that if the download rate of annex content drops below byte/s, the content download stops silently, continuing with the next file. This can lead to files without content which is an issue when the zip file is created, containing only files with the annex object reference instead of the full files.

If another content download is initiated, the content download of these files will continue where the download has stopped before.

As a quick fix, a second round of content download should be added to the download procedure. If files have not been fully downloaded, they should finish during the second round. If all files had been downloaded in the first place, nothing will happen.

As a long term solution content download fails have to be identified; if content is still missing after the second round of downloads, admins should be notified via email to look into the issue.