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https://issues.apache.org/jira/browse/SPARK-9782?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14680431#comment-14680431
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Dennis Huo commented on SPARK-9782:
-----------------------------------
Correct, from what I understand, the "node labels" JIRA is a more heavyweight
behavioral-change feature, for being able to control packing of requested
containers onto machines based on "node labels".
"YARN application tags" are distinct from node labels, and are only used by
workflow orchestrators on top of YARN, without affecting how YARN does packing
at all.
> Add support for YARN application tags running Spark on YARN
> -----------------------------------------------------------
>
> Key: SPARK-9782
> URL: https://issues.apache.org/jira/browse/SPARK-9782
> Project: Spark
> Issue Type: Improvement
> Components: YARN
> Affects Versions: 1.4.1
> Reporter: Dennis Huo
>
> https://issues.apache.org/jira/browse/YARN-1390 originally added the new
> “Application Tags” feature to YARN to help track the sources of applications
> among many possible YARN clients.
> https://issues.apache.org/jira/browse/YARN-1399 improved on this to allow a
> set of tags to be applied, and for comparison,
> https://issues.apache.org/jira/browse/MAPREDUCE-5699 added support for
> MapReduce to easily propagate tags through to YARN via Configuration settings.
> Since the ApplicationSubmissionContext.setApplicationTags method was only
> added in Hadoop 2.4+, Spark support will invoke the method via reflection the
> same way other such version-specific methods are called in elsewhere in the
> YARN client. Since the usage of tags is generally not critical to the
> functionality of older YARN setups, it should be safe to handle
> NoSuchMethodException with just a logWarning.
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