[query] ipython 1.18.1 (and possibly other versions) does not work with query on batch

[danking]

What happened?

It seems like the event loop policy has changed again

Version

0.2.126

Relevant log output

(base) dking@wm28c-761 hail % HAIL_QUERY_BACKEND=service ipython
Python 3.10.9 (main, Jan 11 2023, 09:18:18) [Clang 14.0.6 ]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.18.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import hail as hl

In [2]: hl.init()
/Users/dking/miniconda3/lib/python3.10/site-packages/hail/context.py:350: UserWarning: The "service" backend is now called the "batch" backend. Support for "service" will be removed in a future release.
  warnings.warn(
---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
File ~/miniconda3/lib/python3.10/site-packages/hailtop/hail_event_loop.py:12, in hail_event_loop()
     11 try:
---> 12     asyncio.get_running_loop()
     13     nest_asyncio.apply()

RuntimeError: no running event loop

During handling of the above exception, another exception occurred:

RuntimeError                              Traceback (most recent call last)
Cell In[2], line 1
----> 1 hl.init()

File <decorator-gen-1760>:2, in init(sc, app_name, master, local, log, quiet, append, min_block_size, branching_factor, tmp_dir, default_reference, idempotent, global_seed, spark_conf, skip_logging_configuration, local_tmpdir, _optimizer_iterations, backend, driver_cores, driver_memory, worker_cores, worker_memory, gcs_requester_pays_configuration, regions, gcs_bucket_allow_list)

File ~/miniconda3/lib/python3.10/site-packages/hail/typecheck/check.py:587, in _make_dec.<locals>.wrapper(__original_func, *args, **kwargs)
    584 @decorator
    585 def wrapper(__original_func: Callable[..., T], *args, **kwargs) -> T:
    586     args_, kwargs_ = check_all(__original_func, args, kwargs, checkers, is_method=is_method)
--> 587     return __original_func(*args_, **kwargs_)

File ~/miniconda3/lib/python3.10/site-packages/hail/context.py:357, in init(sc, app_name, master, local, log, quiet, append, min_block_size, branching_factor, tmp_dir, default_reference, idempotent, global_seed, spark_conf, skip_logging_configuration, local_tmpdir, _optimizer_iterations, backend, driver_cores, driver_memory, worker_cores, worker_memory, gcs_requester_pays_configuration, regions, gcs_bucket_allow_list)
    354     backend = 'batch'
    356 if backend == 'batch':
--> 357     return hail_event_loop().run_until_complete(init_batch(
    358         log=log,
    359         quiet=quiet,
    360         append=append,
    361         tmpdir=tmp_dir,
    362         local_tmpdir=local_tmpdir,
    363         default_reference=default_reference,
    364         global_seed=global_seed,
    365         driver_cores=driver_cores,
    366         driver_memory=driver_memory,
    367         worker_cores=worker_cores,
    368         worker_memory=worker_memory,
    369         name_prefix=app_name,
    370         gcs_requester_pays_configuration=gcs_requester_pays_configuration,
    371         regions=regions,
    372         gcs_bucket_allow_list=gcs_bucket_allow_list
    373     ))
    374 if backend == 'spark':
    375     return init_spark(
    376         sc=sc,
    377         app_name=app_name,
   (...)
    392         gcs_requester_pays_configuration=gcs_requester_pays_configuration
    393     )

File ~/miniconda3/lib/python3.10/site-packages/hailtop/hail_event_loop.py:16, in hail_event_loop()
     14     return asyncio.get_running_loop()
     15 except RuntimeError:
---> 16     return asyncio.get_event_loop()

File ~/miniconda3/lib/python3.10/asyncio/events.py:671, in BaseDefaultEventLoopPolicy.get_event_loop(self)
    668     self.set_event_loop(self.new_event_loop())
    670 if self._local._loop is None:
--> 671     raise RuntimeError('There is no current event loop in thread %r.'
    672                        % threading.current_thread().name)
    674 return self._local._loop

RuntimeError: There is no current event loop in thread 'MainThread'.

[danking]

Mitigation: pip3 install 'ipython<8.17'