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From Benjamin Bannier <benjamin.bann...@mesosphere.io>
Subject Re: Review Request 51784: Supported merging the launch command from isolators.
Date Tue, 13 Sep 2016 12:57:57 GMT


> On Sept. 12, 2016, 10:16 p.m., Gilbert Song wrote:
> > src/slave/containerizer/mesos/containerizer.cpp, line 1109
> > <https://reviews.apache.org/r/51784/diff/1/?file=1495422#file1495422line1109>
> >
> >     Could we just have `arguments` MergeFrom? Because singular field (e.g., `value`)
may be overwritten by some user modules accidentally.

+1

Taking this a step further, given own function to merge a list of `CommandInfo` into a single
`CommandInfo`, e.g., `[CommandInfo] -> Try(CommandInfo)`, would give us a chance to sanitize
(e.g., are all non-ignored scalar fields compatible?), and explicitly drop ignored elements
in a single, exposed spot.


- Benjamin


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On Sept. 11, 2016, 2:17 a.m., Jie Yu wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/51784/
> -----------------------------------------------------------
> 
> (Updated Sept. 11, 2016, 2:17 a.m.)
> 
> 
> Review request for mesos, Benjamin Bannier and Gilbert Song.
> 
> 
> Bugs: MESOS-5275
>     https://issues.apache.org/jira/browse/MESOS-5275
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Previously, we only allow one isolator to specify the launch command
> for the container. This is not ideal because multiple isolators might
> want to add some flags to the command executor. For instance, the
> 'docker/runtime' isolator wants to specify '--task_command' and
> '--working_directory', and 'linux/capabilities' isolator wants to
> specify '--capabilities'.
> 
> This patch changes the semantics so that launch command from isolators
> are merged. However, it is isolator's responsibility to make sure the
> merged command is a valid command.
> 
> 
> Diffs
> -----
> 
>   src/slave/containerizer/mesos/containerizer.cpp 89b7e8db38916d69d9b2d4fe305d4397b0859a10

> 
> Diff: https://reviews.apache.org/r/51784/diff/
> 
> 
> Testing
> -------
> 
> make check
> 
> 
> Thanks,
> 
> Jie Yu
> 
>


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