[jira] [Comment Edited] (MESOS-5173) Allow master/agent to take multiple modules manifest files

["Kapil Arya (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MESOS-5173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276618#comment-15276618 ] 

Kapil Arya edited comment on MESOS-5173 at 5/26/16 5:59 PM:
------------------------------------------------------------

Added RRs:
https://reviews.apache.org/r/47123 : Added --modules_dir flag
https://reviews.apache.org/r/47905 : Test case added.
https://reviews.apache.org/r/47906 : Documentation updates.


was (Author: karya):
Added RR: https://reviews.apache.org/r/47123/

> Allow master/agent to take multiple modules manifest files
> ----------------------------------------------------------
>
>                 Key: MESOS-5173
>                 URL: https://issues.apache.org/jira/browse/MESOS-5173
>             Project: Mesos
>          Issue Type: Task
>            Reporter: Kapil Arya
>            Assignee: Kapil Arya
>            Priority: Blocker
>              Labels: mesosphere
>             Fix For: 0.29.0
>
>
> When loading multiple modules into master/agent, one has to merge all module metadata (library name, module name, parameters, etc.) into a single json file which is then passed on to the --modules flag. This quickly becomes cumbersome especially if the modules are coming from different vendors/developers.
> An alternate would be to allow multiple invocations of --modules flag that can then be passed on to the module manager. That way, each flag corresponds to just one module library and modules from that library.
> Another approach is to create a new flag (e.g., --modules-dir) that contains a path to a directory that would contain multiple json files. One can think of it as an analogous to systemd units. The operator that drops a new file into this directory and the file would automatically be picked up by the master/agent module manager. Further, the naming scheme can also be inherited to prefix the filename with an "NN_" to signify oad order.



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