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From "Till Toenshoff (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-1940) Add Mesos-graced/hosted libraries to installation path
Date Wed, 22 Oct 2014 18:24:33 GMT

    [ https://issues.apache.org/jira/browse/MESOS-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180280#comment-14180280
] 

Till Toenshoff commented on MESOS-1940:
---------------------------------------

Let me try to look at this from the user's perspective who needs to work with the results
of this discussion.

The trivial use-case up front: supplying a full module library path via --modules certainly
is always possible..
The less trivial case would be allowing the user to supply library names without supplying
an absolute path. Do we want to cover this case? If so, then there seem to be at least two
options:
A. Use the configuration-phase prefixed lib-folder (e.g. /usr/local/lib) and rely on ldconfig
to initialize that location.
B. Use a more specific, mesos-module location (e.g. /usr/local/lib/mesos) and allow mesos
to use that location by default (again due to configuration-phase prefixed location) which
could then be overridden by a --modules_path flag. 

Using an ldconfig indexed path certainly makes things rather quick and easy on the integration
side. It may however be considered a bit untidy as these modules are very much mesos specific,
hence they should not "clutter" a regular, all-purpose shared object folder. cyrus-sasl2 does
use option B with its mechanism plugins.


> Add Mesos-graced/hosted libraries to installation path
> ------------------------------------------------------
>
>                 Key: MESOS-1940
>                 URL: https://issues.apache.org/jira/browse/MESOS-1940
>             Project: Mesos
>          Issue Type: Task
>            Reporter: Niklas Quarfot Nielsen
>
> When more modules are going to show up within the Mesos source base (and even with sample/test
modules) it would be convenient to have them be installed alongside the regular Mesos binaries.



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