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https://issues.apache.org/jira/browse/AIRFLOW-840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Bij reassigned AIRFLOW-840:
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Assignee: Alexander Bij (was: Bolke de Bruin)
> 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
> Assignee: Alexander Bij
> Labels: security
>
> While attempting to configure Kerberos ticket renewal in a Python3
> environment, I encountered this encoding issue trying to run {{airflow
> kerberos}}:
> {code:none}
> 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
> {code}
> 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')}}
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