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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5877) Allow all nm-whitelist-env to get overridden during launch
Date Sat, 19 Nov 2016 20:56:59 GMT

    [ https://issues.apache.org/jira/browse/YARN-5877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15679848#comment-15679848
] 

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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