Github user joshelser commented on the issue:
https://github.com/apache/accumulo/pull/222
> Discovered these babies (which use the Hadoop FileSystem object in some
way) and they all pass:
I wouldn't trust this... We very likely don't configure HDFS to actually
enforce filesystem permissions (no, this is not the default).
https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsPermissionsGuide.html#Configuration_Parameters
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