Erik Cederstrand created AIRFLOW-840: ----------------------------------------
Summary: Python3 encoding issue in Kerberos Key: AIRFLOW-840 URL: https://issues.apache.org/jira/browse/AIRFLOW-840 Project: Apache Airflow Issue Type: Bug Components: security Affects Versions: Airflow 1.8 Environment: $ python --version Python 3.4.3 Reporter: Erik Cederstrand While attempting to configure Kerberos ticket renewal in a Python3 environment, I encountered this encoding issue trying to run {{airflow kerberos}}: {{ Traceback (most recent call last): File "/usr/local/bin/airflow", line 15, in <module> args.func(args) File "/usr/local/lib/python3.4/dist-packages/airflow/bin/cli.py", line 600, in kerberos airflow.security.kerberos.run() File "/usr/local/lib/python3.4/dist-packages/airflow/security/kerberos.py", line 110, in run renew_from_kt() File "/usr/local/lib/python3.4/dist-packages/airflow/security/kerberos.py", line 55, in renew_from_kt "\n".join(subp.stderr.readlines()))) TypeError: sequence item 0: expected str instance, bytes found }} The issue here (ignoring for a moment why {{kinit}} is failing on my machine) is that Popen in Python3 returns {{bytes}} for stdin/stdout, but both are handled as if they are {{str}}. I'm unsure what the Py2/3 compat policy is at Airflow, but a simple {{from six import PY2}} and an if/else seems like the least intrusive fix. The non-PY2 path would then add something like {{subp.stdin.readlines().decode(errors='ignore')}} -- This message was sent by Atlassian JIRA (v6.3.15#6346)