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https://issues.apache.org/jira/browse/YARN-5194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15316909#comment-15316909
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Siddharth Seth commented on YARN-5194:
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This will likely break a bunch of things - hence targeted at 3.0. Could you
please elaborate on HDFS getConf ?
If there's enough interest to reduce the size of config objects in memory /
serialized size - this can be taken up for a 3.x release.
> Avoid adding yarn-site to all Configuration instances created by the JVM
> ------------------------------------------------------------------------
>
> Key: YARN-5194
> URL: https://issues.apache.org/jira/browse/YARN-5194
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Siddharth Seth
>
> {code}
> static {
> addDeprecatedKeys();
> Configuration.addDefaultResource(YARN_DEFAULT_CONFIGURATION_FILE);
> Configuration.addDefaultResource(YARN_SITE_CONFIGURATION_FILE);
> }
> {code}
> This puts the contents of yarn-default and yarn-site into every configuration
> instance created in the VM after YarnConfiguration has been initialized.
> This should be changed to a local addResource for the specific
> YarnConfiguration instance, instead of polluting every Configuration instance.
> Incompatible change. Have set the target version to 3.x.
> The same applies to HdfsConfiguration (hdfs-site.xml), and Configuration
> (core-site.xml etc).
> core-site may be worth including everywhere, however it would be better to
> expect users to explicitly add the relevant resources.
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