Gera Shegalov created YARN-4789:
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Summary: Provide helpful exception for non-PATH-like conflict with
admin.user.env
Key: YARN-4789
URL: https://issues.apache.org/jira/browse/YARN-4789
Project: Hadoop YARN
Issue Type: Bug
Affects Versions: 2.7.2
Reporter: Gera Shegalov
Assignee: Gera Shegalov
Environment variables specified in mapreduce.admin.user.env are supposed to be
paths (class, shell, library) and they can be merged with the user-provided
values. However, it's also possible that the cluster admins specify some
non-PATH-like variable such as JAVA_HOME. In this case if there is the same
variable provided by the user, we'll get a concatenation that does not make
sense and is difficult to debug.
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