Hello all.
I noticed that whenever a user in Linux runs ds3_java_cli and get objects, any other user is unable to get objects because of permissions in /tmp/ds3 folder, which gets created and owned by the first users; any other user will fail using it.
My fix is set owner root:root, make it world writable, and set sticky bit in the /tmp/ds3 folder, just like the /tmp/ folder.
However a better fix I think would be if each user creates its own /tmp/ds3_username/ folder. Just a suggestion for developers.
Regards.