Josh Elser created ACCUMULO-3513:
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Summary: Ensure MapReduce functionality with Kerberos enabled
Key: ACCUMULO-3513
URL: https://issues.apache.org/jira/browse/ACCUMULO-3513
Project: Accumulo
Issue Type: Bug
Components: client
Reporter: Josh Elser
Assignee: Josh Elser
Priority: Blocker
Fix For: 1.7.0
I talked to [~devaraj] today about MapReduce support running on secure Hadoop
to help get a picture about what extra might be needed to make this work.
Generally, in Hadoop and HBase, the client must have valid credentials to
submit a job, then the notion of delegation tokens is used by for further
communication since the servers do not have access to the client's sensitive
information. A centralized service manages creation of a delegation token which
is a record which contains certain information (such as the submitting user
name) necessary to securely identify the holder of the delegation token.
The general idea is that we would need to build support into the master to
manage delegation tokens to node managers to acquire and use to run jobs.
Hadoop and HBase both contain code which implements this general idea, but we
will need to apply them Accumulo and verify that it is M/R jobs still work on a
kerberized environment.
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