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Table of Contents

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• Tables in the corresponding HBase namespace to create Table-based datasets
  • If you provide a custom HBase namespace when creating the namespace, it is your responsibility to ensure that every application principal can create tables in this namespace. 
    • in hbase shell: grant '<user>', 'AC', '@<namespace>'
    • or grant '@<group>', 'AC', '@<namespace>'
  • If you let CDAP create the namespace, it will use the group name specified in the namespace configuration to issue the grant '@<group>', 'AC', '@<namespace>'. In this case it is necessary that all application owners are in that group. 
• Tables in the namespace's Hive database, to be able to enable Explore for datasets. Depending on the Hive authorization settings:
  • The application user must be privileged to create tables in the database
  • Hive must be configured to grant all privileges to the user that creates a table (depending on Hive configuration, this may not be the case)
  • For any sharing between applications that requires additional permissions, these must be granted manually.

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• FileSetProperties.setUseExisting(true) (or DATA_USE_EXISTING / "data.use.existing") to reuse an existing location and Hive table. The dataset will assume that it does not own the existing data in that location and Hive table, and therefore, when you delete or truncate the dataset, the data will not be deleted. 
• FileSetProperties.setPossessExisting(true) (or DATA_POSSESS_EXISTING / "data.possess.existing") to assume ownership an existing location and Hive table. The dataset will assume that it owns the existing data in that location and Hive table, and therefore, when you delete or truncate the dataset, all data will be deleted, including the previously existing data and Hive partitions.  

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<property>
	<name>hive.server2.enable.doAs</name>
	<value>false</value>
</property>
<property>
	<name>hive.users.in.admin.role</name>
	<value>hive,cdap</value>
</property>
<property>
	<name>hive.security.authorization.manager</name>
	<value>org.apache.hadoop.hive.ql.security.authorization.plugin.sqlstd.SQLStdHiveAuthorizerFactory</value>
</property>
<property>
	<name>hive.security.authorization.enabled</name>
	<value>true</value>
</property>
<property>
	<name>hive.security.authenticator.manager</name>
	<value>org.apache.hadoop.hive.ql.security.ProxyUserAuthenticator</value>
</property>

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