Monitoring broken on MacOS

Running this test script from @garri1105 works on midway but not on my local machine (macOS 10.13.3). Note that if I make the DB elsewhere and copy it locally I'm able to run visualize without issue.

import parsl
from parsl.app.app import python_app
from parsl.monitoring.db_logger import MonitoringConfig
import random

threads_config = parsl.config.Config(
    executors=[parsl.executors.threads.ThreadPoolExecutor(label='threads', max_threads=4)],
    monitoring_config=MonitoringConfig(
        database_type='local_database',
        logger_name='parsl_db_logger',
        eng_link='sqlite:///DB2.db',
        web_app_host='http://localhost',
        web_app_port=8000,
        resource_loop_sleep_duration=2
    )
)

dfk = parsl.load(threads_config)

import time

@python_app
def bitcoin_mining(seconds):
    time.sleep(seconds)
    if random.randint(0, 10) >= 8:
        raise AssertionError("Just an Error")
    return seconds

@python_app
def feeding_the_poor(seconds):
    time.sleep(seconds)
    if random.randint(0, 10) >= 9:
        raise AssertionError("Just an Error")
    return seconds

tasks = [bitcoin_mining(random.random() * 3) for _ in range(0, 100)] + [feeding_the_poor(random.random() * 3) for _ in range(0, 100)]
for task in tasks:
    print(task)
    try:
        task.result()
    except: pass

Fails with:

 >python make_db.py
 * Visualizing DB2.db
 * Running on http://localhost:8001
Process Process-2:
Traceback (most recent call last):
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/asyncio/selector_events.py", line 262, in _add_reader
    key = self._selector.get_key(fd)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/selectors.py", line 192, in get_key
    raise KeyError("{!r} is not registered".format(fileobj)) from None
KeyError: '14 is not registered'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
    self.run()
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/multiprocessing/process.py", line 99, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/parsl/monitoring/logging_server.py", line 44, in run
    app.listen(monitoring_config.web_app_port)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/tornado/web.py", line 2042, in listen
    server.listen(port, address)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/tornado/tcpserver.py", line 144, in listen
    self.add_sockets(sockets)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/tornado/tcpserver.py", line 158, in add_sockets
    sock, self._handle_connection)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/tornado/netutil.py", line 268, in add_accept_handler
    io_loop.add_handler(sock, accept_handler, IOLoop.READ)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/site-packages/tornado/platform/asyncio.py", line 80, in add_handler
    fd, self._handle_events, fd, IOLoop.READ)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/asyncio/selector_events.py", line 335, in add_reader
    return self._add_reader(fd, callback, *args)
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/asyncio/selector_events.py", line 265, in _add_reader
    (handle, None))
  File "/Users/awoodard/software/miniconda3/envs/parsl/lib/python3.7/selectors.py", line 522, in register
    self._selector.control([kev], 0, 0)
OSError: [Errno 9] Bad file descriptor

Parsl / parsl

Monitoring broken on MacOS #616