synchronization is blocked when one file gets 503 error on GET

[moscicki]

This was seen on 2.4.2 and 2.2.4 client versions (both Mac and Linux). Ref. CERNBOX-677

The whole synchronization is blocked when the server returns 503 (temporarily unavailble) on GET for one of the files.

By blocked I mean that no new files are downloaded from the server and local modifications to other files are not propagated to the server (it's is very erratic, sometimes they do). So one file with 503 error may block the entire synchronization of all other files in the sync folder (also in other directories).

The error shown by the client is this one:

[guruz]

@moscicki Would you agree this is a duplicate of #5088 ?

[moscicki]

Yes, looks the same. But it is quite serious in practice for our services so if possible please raise priority.
I close as the dup.