Github user LosD commented on the pull request:
https://github.com/apache/metamodel/pull/78#issuecomment-164058639
Isn't it dangerous reuse existing Hadoop/Yarn environment variables? They
may be set globally without being intended for use with whatever is using
MetaModel, and they will override the configured ```fs.defaultFS```, as far as
I read the
[JavaDocs](https://hadoop.apache.org/docs/r2.4.1/api/org/apache/hadoop/conf/Configuration.html#addResource(java.io.InputStream,
java.lang.String)).
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