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https://issues.apache.org/jira/browse/YARN-5877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15679848#comment-15679848
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Varun Saxena commented on YARN-5877:
------------------------------------
Sorry for the confusion. Correct. We do not inherit parent environment while
launching the container. We explicitly clear the environment in ProcessBuilder
and use the environment in container launch context instead.
But can a similar thing happen in docker scenario ? The main thing which I
wanted to highlight was that we should probably give preference to environment
set in container launch context if its also configured in the whitelist no
matter what the environment is set to.
> Allow all nm-whitelist-env to get overridden during launch
> ----------------------------------------------------------
>
> Key: YARN-5877
> URL: https://issues.apache.org/jira/browse/YARN-5877
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Bibin A Chundatt
> Assignee: Bibin A Chundatt
> Attachments: Dockerfile, YARN-5877.0001.patch, YARN-5877.0002.patch,
> bootstrap.sh, yarn-site.xml
>
>
> As per the {{yarn.nodemanager.env-whitelist}} for the configured values
> should containers may override rather than use NodeManager's default.
> {code}
> <property>
> <description>Environment variables that containers may override rather
> than use NodeManager's default.</description>
> <name>yarn.nodemanager.env-whitelist</name>
>
> <value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME</value>
> </property>
> {code}
> But only the following containers can override
> {code}
> whitelist.add(ApplicationConstants.Environment.HADOOP_YARN_HOME.name());
> whitelist.add(ApplicationConstants.Environment.HADOOP_COMMON_HOME.name());
> whitelist.add(ApplicationConstants.Environment.HADOOP_HDFS_HOME.name());
> whitelist.add(ApplicationConstants.Environment.HADOOP_CONF_DIR.name());
> whitelist.add(ApplicationConstants.Environment.JAVA_HOME.name());
> {code}
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