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https://issues.apache.org/jira/browse/AIRFLOW-344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Imberman closed AIRFLOW-344.
-----------------------------------
Resolution: Auto Closed
> ImportError: No module named lockfile.pidlockfile
> -------------------------------------------------
>
> Key: AIRFLOW-344
> URL: https://issues.apache.org/jira/browse/AIRFLOW-344
> Project: Apache Airflow
> Issue Type: Bug
> Reporter: Greg Reda
> Priority: Major
>
> When setting up a clean install of airflow on ubuntu 14.04, I ran into the
> following error:
> {code}
> vagrant@vagrant-ubuntu-trusty-64:~$ airflow
> [2016-07-19 15:37:41,839] {__init__.py:36} INFO - Using executor
> SequentialExecutor
> [2016-07-19 15:37:41,912] {driver.py:120} INFO - Generating grammar tables
> from /usr/lib/python2.7/lib2to3/Grammar.txt
> [2016-07-19 15:37:41,929] {driver.py:120} INFO - Generating grammar tables
> from /usr/lib/python2.7/lib2to3/PatternGrammar.txt
> Traceback (most recent call last):
> File "/usr/local/bin/airflow", line 5, in <module>
> from airflow.bin.cli import CLIFactory
> File "/usr/local/lib/python2.7/dist-packages/airflow/bin/cli.py", line 17,
> in <module>
> from daemon.pidfile import TimeoutPIDLockFile
> File "/usr/local/lib/python2.7/dist-packages/daemon/pidfile.py", line 18,
> in <module>
> from lockfile.pidlockfile import PIDLockFile
> ImportError: No module named lockfile.pidlockfile
> {code}
> This seems to be because Airflow includes python-daemon >= 2.1.1 as a
> dependency, but not lockfile. It seems that some time before 2.1.1
> python-daemon removed TimeoutPIDLockFile and instead decided just to use
> lockfile.
> Uninstalling python-daemon and reinstalling fixed the issue, as python-daemon
> included a lockfile dependency.
> Not sure why PyPi wouldn't have pulled this down when resolving Airflow's
> python-daemon dependency, but figured I'd open this issue in case other run
> into it in the future. It might make sense for Airflow to explicitly require
> lockfile.
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