[jira] [Commented] (SLIDER-891) Add ability to set Slider AM launch environment during cluster create/start

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLIDER-891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14564305#comment-14564305 ] 

ASF subversion and git services commented on SLIDER-891:
--------------------------------------------------------

Commit ed7b52eab76ba74ab8a7ab274aab1d83d5eea5ef in incubator-slider's branch refs/heads/develop from [~gsaha]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-slider.git;h=ed7b52e ]

SLIDER-891 Add ability to set Slider AM launch environment during cluster create/start


> Add ability to set Slider AM launch environment during cluster create/start
> ---------------------------------------------------------------------------
>
>                 Key: SLIDER-891
>                 URL: https://issues.apache.org/jira/browse/SLIDER-891
>             Project: Slider
>          Issue Type: Bug
>          Components: appmaster, client
>    Affects Versions: Slider 0.80
>            Reporter: Gour Saha
>            Assignee: Gour Saha
>             Fix For: Slider 0.81
>
>
> It might be necessary to set env variables like *LD_LIBRARY_PATH* after YARN creates the AM container and before the Slider AM process is started. It should be possible to append to such variables from the client side, when the application instance is created or started from a stopped state. 
> This is beneficial in a cluster which undergoes upgrade and most likely has newer versions of native libraries. 
> All applications which were started prior to the upgrade, should be able to continue to use the same versions of native libraries it was started with, if Slider AM failover occurs after the upgrade. The failover AM should not get the newer versions of the native libraries just because the cluster underwent an upgrade.
> The variable {{slider.am.launch.env}} will be created which can be set in slider-client.xml with a format as below -
> {noformat}
> <property>
>   <name>slider.am.launch.env</name>
>   <value>LD_LIBRARY_PATH=/usr/hadoop/lib/native:/usr/hadoop/lib/native/Linux-amd64-64,PATH=/usr/hadoop/bin</value>
> </property>
> {noformat}
> Multiple variables should be comma {{,}} separated. Each variable's name and value should be separated by {{=}} character.



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