8000 Fix race condition by StasDeep · Pull Request #2477 · spotify/luigi · GitHub
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Fix race condition #2477

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Merged
merged 1 commit into from
Jul 30, 2018
Merged

Fix race condition #2477

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9 changes: 7 additions & 2 deletions luigi/lock.py
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
"""
from __future__ import print_function

import errno
import hashlib
import os
import sys
Expand Down Expand Up @@ -102,10 +103,14 @@ def acquire_for(pid_dir, num_available=1, kill_signal=No 6731 ne):

my_pid, my_cmd, pid_file = get_info(pid_dir)

# Check if there is a pid file corresponding to this name
if not os.path.exists(pid_dir):
# Create a pid file if it does not exist
try:
os.mkdir(pid_dir)
os.chmod(pid_dir, 0o777)
except OSError as exc:
if exc.errno != errno.EEXIST:
raise
pass

# Let variable "pids" be all pids who exist in the .pid-file who are still
# about running the same command.
Expand Down
0