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https://issues.apache.org/jira/browse/AIRFLOW-1479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16109050#comment-16109050
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Ash Berlin-Taylor edited comment on AIRFLOW-1479 at 8/1/17 3:05 PM:
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{{PIPE}} seems like the wrong choice for stdin as we won't be feeding any input
to the subprocess. There is a special value {{DEVNULL}} that seems more
apropriate for stdin.
(We are not currently passing any value which means the child inherits stdin
from the parent process. I'm not sure what it's connected to but a bit
surprised to see if giving EBADF. I guess something closed stdin earlier in the
Airflow task worker setup)
was (Author: ashb):
{{PIPE}} seems like the wrong choice for stdin as we won't be feeding any input
to the subprocess. There is a special value {{DEVNULL}} that seems more
apropriate for stdin.
(We are not currently passing any value which means the child inherits stdin
from the parent process. I'm not sure what it's connected to but a bit
surprised to see if giving EBADF)
> BashOperator does not open pipe for STDIN
> -----------------------------------------
>
> Key: AIRFLOW-1479
> URL: https://issues.apache.org/jira/browse/AIRFLOW-1479
> Project: Apache Airflow
> Issue Type: Bug
> Components: operators
> Affects Versions: 1.8.1
> Environment: FreeBSD, JRuby 9.x, Rake, Python 2.7, Airflow 1.8
> Reporter: Cedrik Neumann
> Priority: Trivial
> Labels: easyfix
>
> From JRuby 9 onwards we experienced issues when executing Rake tasks via the
> BashOperator with the error message:
> {noformat}
> Errno::EBADF: Bad file descriptor - 0
> {noformat}
> We figured out that the issue is due to a missing pipe for STDIN when the
> BashOperator calls `Popen`.
> The quick fix of the issue would be to add a pipe for STDIN as well:
> {code:python}
> sp = Popen(
> ['bash', fname],
> stdout=PIPE, stderr=STDOUT, stdin=PIPE,
> cwd=tmp_dir, env=self.env)
> {code}
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