Eli Collins created HDFS-3907:
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Summary: Allow multiple users for local block readers
Key: HDFS-3907
URL: https://issues.apache.org/jira/browse/HDFS-3907
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 2.0.0-alpha
Reporter: Eli Collins
Assignee: Eli Collins
The {{dfs.block.local-path-access.user}} config added in HDFS-2246 only
supports a single user, however as long as blocks are group readable by more
than one user the feature could be used by multiple users, to support this we
just need to allow both to be configured. In practice this allows us to also
support HBase where the client (RS) runs as the hbase system user and the DN
runs as hdfs system user. I think this should work secure as well since we're
not using impersonation in the HBase case.
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