HMaster and HRegionServer should be able to login from Kerberos keytab when
running on security-enabled Hadoop
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Key: HBASE-3582
URL: https://issues.apache.org/jira/browse/HBASE-3582
Project: HBase
Issue Type: Bug
Components: security
Affects Versions: 0.90.1, 0.90.0
Reporter: Gary Helmling
Currently HBase can run on top of Hadoop 0.20 with security APIs, but only
using the "simple" authentication method. There is currently no configuration
or hooks for the HBase process to obtain Kerberos credentials so it can
authenticate against secure Hadoop.
We should extend the current {{org.apache.hadoop.hbase.security.User}} hooks to
allow obtaining credentials from a keytab file when security is enabled.
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