Github user EronWright commented on the issue:
https://github.com/apache/flink/pull/2974
This doesn't really address the 'root cause' here, that the .out file is
missing (for Mesos deployments). While we could change `mesos-taskmanager.sh`
to redirect the output, I honestly hesitate to, because Mesos is already
redirecting the output to 'stdout' and 'stderr'. It has log-rolling features
too. Therefore I think it a step backwards to redirect to
`flink-taskmanager.out`.
So, I think Flink should treat the lack of a log as a 'not applicable'
situation, not an 'error' situation.
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