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https://issues.apache.org/jira/browse/AIRFLOW-6208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17028247#comment-17028247
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ASF GitHub Bot commented on AIRFLOW-6208:
-----------------------------------------
stale[bot] commented on pull request #6767: [AIRFLOW-6208] Implement fileno in
StreamLogWriter
URL: https://github.com/apache/airflow/pull/6767
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> StreamLogWriter class does not implement file fileno() function, preventing
> output redirection to stdout with the python subprocess module
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AIRFLOW-6208
> URL: https://issues.apache.org/jira/browse/AIRFLOW-6208
> Project: Apache Airflow
> Issue Type: Bug
> Components: breeze, logging
> Affects Versions: 1.10.6
> Environment: Archlinux python 3.8 Linux 5.4
> Also affects airflow breeze python 3.6 docker development environment
> Reporter: Sahas L
> Assignee: Sahas L
> Priority: Major
>
> When using the python operator to execute a callbackfunction which makes use
> of the subprocess module stdout redirection to system stdout, the task fails
> due to fileno() being unimplemented in airflow/utils/log/logging_mixin.py
> class StreamLogWriter.
> {code:java}
> Traceback (most recent call last):
> File "/usr/lib/python3.8/site-packages/airflow/models/taskinstance.py",
> line 930, in _run_raw_task
> result = task_copy.execute(context=context)
> File
> "/usr/lib/python3.8/site-packages/airflow/operators/python_operator.py", line
> 113, in execute
> return_value = self.execute_callable()
> File
> "/usr/lib/python3.8/site-packages/airflow/operators/python_operator.py", line
> 118, in execute_callable
> return self.python_callable(*self.op_args, **self.op_kwargs)
> File "/home/sahas/airflow/dags/subprocess.py", line 39, in sp
> subprocess.run("echo 1", shell=True, check=True, stdout=sys.stdout,
> stderr=sys.stderr)
> File "/usr/lib/python3.8/subprocess.py", line 489, in run
> with Popen(*popenargs, **kwargs) as process:
> File "/usr/lib/python3.8/subprocess.py", line 804, in __init__
> errread, errwrite) = self._get_handles(stdin, stdout, stderr)
> File "/usr/lib/python3.8/subprocess.py", line 1487, in _get_handles
> c2pwrite = stdout.fileno()
> AttributeError: 'StreamLogWriter' object has no attribute 'fileno'
> {code}
> The code in the callback function is:
> {code:java}
> import sys
> import os
> subprocess.run("echo 1", shell=True, check=True, stdout=sys.stdout,
> stderr=sys.stderr)
> {code}
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