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https://issues.apache.org/jira/browse/YARN-4757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15607259#comment-15607259
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Hadoop QA commented on YARN-4757:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s
{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 7s {color}
| {color:red} YARN-4757 does not apply to YARN-4757. Rebase required? Wrong
Branch? See https://wiki.apache.org/hadoop/HowToContribute for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12808955/YARN-4757-YARN-4757.005.patch
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| JIRA Issue | YARN-4757 |
| Console output |
https://builds.apache.org/job/PreCommit-YARN-Build/13516/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> [Umbrella] Simplified discovery of services via DNS mechanisms
> --------------------------------------------------------------
>
> Key: YARN-4757
> URL: https://issues.apache.org/jira/browse/YARN-4757
> Project: Hadoop YARN
> Issue Type: New Feature
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Jonathan Maron
> Attachments:
> 0001-YARN-4757-Initial-code-submission-for-DNS-Service.patch, YARN-4757-
> Simplified discovery of services via DNS mechanisms.pdf,
> YARN-4757-YARN-4757.001.patch, YARN-4757-YARN-4757.002.patch,
> YARN-4757-YARN-4757.003.patch, YARN-4757-YARN-4757.004.patch,
> YARN-4757-YARN-4757.005.patch, YARN-4757.001.patch, YARN-4757.002.patch
>
>
> [See overview doc at YARN-4692, copying the sub-section (3.2.10.2) to track
> all related efforts.]
> In addition to completing the present story of service-registry (YARN-913),
> we also need to simplify the access to the registry entries. The existing
> read mechanisms of the YARN Service Registry are currently limited to a
> registry specific (java) API and a REST interface. In practice, this makes it
> very difficult for wiring up existing clients and services. For e.g, dynamic
> configuration of dependent endpoints of a service is not easy to implement
> using the present registry-read mechanisms, *without* code-changes to
> existing services.
> A good solution to this is to expose the registry information through a more
> generic and widely used discovery mechanism: DNS. Service Discovery via DNS
> uses the well-known DNS interfaces to browse the network for services.
> YARN-913 in fact talked about such a DNS based mechanism but left it as a
> future task. (Task) Having the registry information exposed via DNS
> simplifies the life of services.
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