xcube-cmems hangs getting description for cmems_obs-si_arc_phy_nrt_l3_P1D

[pont-us]

To reproduce, set CMEMS credentials as environment variables, then run

from xcube.core.store import new_data_store
cmems = new_data_store('cmems')
desc = cmems.describe_data('cmems_obs-si_arc_phy_nrt_l3_P1D')
print(desc)

The describe_data method hangs while downloading large amounts of data over the network. I don't know if it would actually return, given sufficient time: I killed the process after about 20 minutes of continuous downloading at ~6 MB/s.

I'll attach the traceback from the interrupted process, which was somewhere in the xcube function new_grid_mapping_from_dataset when it was killed. (So the actual problem might be in xcube rather than xcube-cmems.)

traceback.txt