Import Timeout for larger CIF files

Omero enables users to upload and import .cif files that can be seen as proprietary image archives. The uploaded cif files are extracted on the server and a new image dataset is created. The import process works seamlessly with small files (e.g. 30MB) but not with larger files (e.g. 190MB). In the latter case, the importer hangs at "Importing Metadata" for serveral hours:

An example log of a timedout import can be found under /OMERO1/ManagedRepository/lahrd_53/2021-06/02/07-07-10.328.log. The CPU usage is still high (>100%) for the corresponding Omero java process (current pid 813), though I'm not sure if that is related to the issue.

To reproduce the issue, I attached a small and a large cif file.