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From "Joseph Wu" <jos...@mesosphere.io>
Subject Re: Review Request 41783: Logger Module: Implement the rotating container logger module.
Date Tue, 29 Dec 2015 22:50:28 GMT


> On Dec. 29, 2015, 2:34 p.m., Timothy Chen wrote:
> > src/slave/container_loggers/rotate.cpp, line 115
> > <https://reviews.apache.org/r/41783/diff/1/?file=1177605#file1177605line115>
> >
> >     Are you expecting termination sent as a empty pipe from stdin here?

Yeah, closing the input pipe is the our current solution for shutting down the logger process
along with the task/executor.

Other solutions would be messier.  For the Mesos Containerizer, we would need to track all
these extra processes along with the task/executor.  For the Docker Containerizer, we would
need to `docker exec` the subprocess (or spawn them in separate containers and track them
there).


> On Dec. 29, 2015, 2:34 p.m., Timothy Chen wrote:
> > src/slave/container_loggers/rotate.cpp, line 125
> > <https://reviews.apache.org/r/41783/diff/1/?file=1177605#file1177605line125>
> >
> >     I think maxFiles shouldn't be zero as well right? We will then not remove the
oldest log file.

Right.  There are actually a few places we can check these parameters; either inside the logger
executable, the logger module, or both.

We presumably want at least 1 log file.  And each log file should be at least some multiple
of the page size (`sysconf(_SC_PAGE_SIZE)`).


- Joseph


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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/41783/#review112231
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On Dec. 29, 2015, 2:18 p.m., Joseph Wu wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/41783/
> -----------------------------------------------------------
> 
> (Updated Dec. 29, 2015, 2:18 p.m.)
> 
> 
> Review request for mesos, Benjamin Hindman and Artem Harutyunyan.
> 
> 
> Bugs: MESOS-4136
>     https://issues.apache.org/jira/browse/MESOS-4136
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Adds a non-default ContainerLogger that constrains total log size by rotating logs (i.e.
renaming the head log file).
> 
> 
> Diffs
> -----
> 
>   src/slave/container_loggers/rotate.cpp PRE-CREATION 
>   src/slave/container_loggers/rotating.cpp PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/41783/diff/
> 
> 
> Testing
> -------
> 
> make check
> 
> 
> Thanks,
> 
> Joseph Wu
> 
>


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