vine: workers without peer transfers and temp files

[btovar]

If a worker does not have a transfer port, should it be able to execute tasks with temporary files? In general I'd say no, but maybe there are cases where a single large worker is executing the workflow?

One possible issue right now is that a temp file may be recreated at many workers because the worker can't fetch it from each other (if I understood the code correctly).

[dthain]

Hmm, under what conditions would the worker not have a port at all? Are you observing cases where listening on the port fails, or is this a situation where the user deliberately disables the transfer port?

[btovar]

Once in a while condor+docker give me a worker whose reported port can't be accessed by other workers.

[btovar]

Once in a while meaning one or two in 1000 workers, but enough to halt a workflow.