yuqian90 commented on a change in pull request #6624: [AIRFLOW-6026] Use
contextlib to redirect stderr and stdout
URL: https://github.com/apache/airflow/pull/6624#discussion_r361074991
##########
File path: airflow/jobs/scheduler_job.py
##########
@@ -122,45 +123,40 @@ def _run_file_processor(result_channel,
# This helper runs in the newly created process
log = logging.getLogger("airflow.processor")
- stdout = StreamLogWriter(log, logging.INFO)
- stderr = StreamLogWriter(log, logging.WARN)
-
set_context(log, file_path)
setproctitle("airflow scheduler - DagFileProcessor
{}".format(file_path))
try:
# redirect stdout/stderr to log
- sys.stdout = stdout
- sys.stderr = stderr
-
- # Re-configure the ORM engine as there are issues with multiple
processes
- settings.configure_orm()
-
- # Change the thread name to differentiate log lines. This is
- # really a separate process, but changing the name of the
- # process doesn't work, so changing the thread name instead.
- threading.current_thread().name = thread_name
- start_time = time.time()
-
- log.info("Started process (PID=%s) to work on %s",
- os.getpid(), file_path)
- scheduler_job = SchedulerJob(dag_ids=dag_id_white_list, log=log)
- result = scheduler_job.process_file(file_path,
- zombies,
- pickle_dags)
- result_channel.send(result)
- end_time = time.time()
- log.info(
- "Processing %s took %.3f seconds", file_path, end_time -
start_time
- )
+ with redirect_stdout(StreamLogWriter(log, logging.INFO)),\
Review comment:
@mik-laj @ashb @kaxil where is this line supposed to redirect the
DagFileProcessor logs/stdout/stderr to? In CI (using breeze), my observation
is that for each DAG, it redirects to individual log files which are in this
directory. Looks like it concatenated the absolute path to the dag definition
file behind AIRFLOW_HOME. `/root/airflow/opt/airflow/airflow/example_dags/`.
Is that expected?
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