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https://issues.apache.org/jira/browse/YARN-8048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408335#comment-16408335
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Rohith Sharma K S commented on YARN-8048:
-----------------------------------------
Attached the patch with following modifications
# SystemServiceManager is a newly added class that is started at the bootstrap
of RM/apiserver.
## Scan for configured common directory where files are kept under user
hierarchy. Lets say, /tmp/system-service is common location then services to be
launched should be kept under user directory i.e
/tmp/system-service/user1/<spec-files>
## Each user can have multiple spec files which will be submitted for that
particular user.
## It directly submit configured spec file without any modifications. It is
admin responsibility to validate the spec file and place it in common location.
Any exception, log a error and continue for other service to launch.
## Scanning of FS directories will be done in background thread so that RM
switch time doesn't impacted.
## RM integrated this service only if _yarn.webapp.api-service.enable_ is set
to true.
I will update on testing status once I verify in secure cluster.
[~gsaha] [[email protected]] [~leftnoteasy] [~sunilg] please help to
review the patch.
> Support auto-spawning of admin configured services during bootstrap of
> rm/apiserver
> -----------------------------------------------------------------------------------
>
> Key: YARN-8048
> URL: https://issues.apache.org/jira/browse/YARN-8048
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
> Priority: Major
> Attachments: YARN-8048.001.patch
>
>
> Goal is to support auto-spawning of admin configured services during
> bootstrap of resourcemanager/apiserver.
> *Requirement:* Some of the services might required to be consumed by yarn
> itself ex: Hbase for atsv2. Instead of depending on user installed HBase or
> sometimes user may not required to install HBase at all, in such conditions
> running HBase app on YARN will help for ATSv2.
> Before YARN cluster is started, admin configure these services spec and place
> it in common location in HDFS. At the time of RM/apiServer bootstrap, these
> services will be submitted.
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