Gary Helmling created HADOOP-13832:
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Summary: Implement a file-based GroupMappingServiceProvider
Key: HADOOP-13832
URL: https://issues.apache.org/jira/browse/HADOOP-13832
Project: Hadoop Common
Issue Type: New Feature
Components: security
Reporter: Gary Helmling
In can be useful to decouple Hadoop group membership resolution from OS-level
group memberships, without having to depend on an external system like LDAP.
I'd like to propose a file-based group mapping implementation, which will read
group membership information from a configured file path on the local
filesystem, reloading periodically for changes. For simplicity, it will use
the same file format as /etc/group.
I'm aware of the option for static mappings in core-site.xml, but maintaining
these in an xml file is cumbersome and these are not reloadable. Having a
built-in file-based implementation will also make this more usable in other
systems relying on Hadoop security tooling, such as HBase.
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