ListIterator getting stuck very easily

[geier1993]

What happened?

I was testing fdb.list interactively and got stuck in a situation when creating multiple iterators.

What are the steps to reproduce the bug?

 l = fdb.list(None, True, True)

 # Do something (or not...)
 i = iter(l)
 elem = next(i)
...

 # Creating a new iterator
 l = fdb.list(None, True, True)  # This will stuck - at least if used on a large fdb

or

for li in fdb.list(None, True, True):
     print(li)

then abort with CTRL+C

and redo the same or similar.

Version

0.0.3

Platform (OS and architecture)

Linux 4.18.0-477.13.1.el8_8.x86_64 #1 SMP Tue May 30 22:15:39 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Relevant log output

No response

Accompanying data

No response

Organisation

ECMWF

[ChrisspyB]

Philip tells me this was on the databridge i.e. using Remote FDB.
@danovaro This looks similar to the fdb-read hanging that meteoswiss had when the clientside queues filled up.

[danovaro]

Hi @geier1993 , can you provide more details on the FDB that you are listing? is it local or remote? As @ChrisspyB suggested, it might not be related to pyfdb but to the underlying library. Thanks!