XD-DENG opened a new issue #13200:
URL: https://github.com/apache/airflow/issues/13200
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**Apache Airflow version**: 2.0.0
**Environment**: Linux & MacOS, venv
- **OS** (e.g. from /etc/os-release): Ubuntu 18.04.3 LTS / MacOS 10.15.7
- **Kernel** (e.g. `uname -a`):
- Linux *** 5.4.0-1029-aws #30~18.04.1-Ubuntu SMP Tue Oct 20 11:09:25 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux
- Darwin *** 19.6.0 Darwin Kernel Version 19.6.0: Thu Oct 29 22:56:45 PDT
2020; root:xnu-6153.141.2.2~1/RELEASE_X86_64 x86_64
**What happened**:
Say I'm in my home dir, running command `airflow scheduler -D --pid
test.pid` (`test.pid` is a relative path) is supposed to start the scheduler in
daemon mode, and the PID will be stored in the file `test.pid` (if it doesn't
exist, it should be created).
However, the scheduler is NOT started. This can be validated by running `ps
aux | grep airflow | grep scheduler` (no process is shown). In the whole
process, I don't see any error message.
However, if I change the pid file path to an absolute path, i.e. `airflow
scheduler -D --pid ${PWD}/test.pid`, it successfully start the scheduler in
daemon mode (can be validated via the method above).
**What you expected to happen**:
Even if the PID file path provided is a relative path, the scheduler should
be started properly as well.
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**How to reproduce it**:
Described above
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**Anything else we need to know**:
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