gtchaos opened a new pull request, #9579:
URL: https://github.com/apache/incubator-doris/pull/9579

   # Proposed changes
   
   Issue Number: close #9536
   
   ## Problem Summary:
   
   At present, Doris can only access the hadoop cluster with kerberos 
authentication enabled by broker, but Doris BE itself 
   does not supports access to a kerberos-authenticated HDFS file.
   
   This PR hope solve the problem.
   
   When create hive external table, users just specify following properties to 
access the hdfs data with kerberos authentication enabled:
   
   ```sql
   CREATE EXTERNAL TABLE t_hive (
   k1 int NOT NULL COMMENT "",
   k2 char(10) NOT NULL COMMENT "",
   k3 datetime NOT NULL COMMENT "",
   k5 varchar(20) NOT NULL COMMENT "",
   k6 double NOT NULL COMMENT ""
   ) ENGINE=HIVE
   COMMENT "HIVE"
   PROPERTIES (
   'hive.metastore.uris' = 'thrift://192.168.0.1:9083',
   'database' = 'hive_db',
   'table' = 'hive_table',
   'dfs.nameservices'='hacluster',
   'dfs.ha.namenodes.hacluster'='n1,n2',
   'dfs.namenode.rpc-address.hacluster.n1'='192.168.0.1:8020',
   'dfs.namenode.rpc-address.hacluster.n2'='192.168.0.2:8020',
   
'dfs.client.failover.proxy.provider.hacluster'='org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider',
   'dfs.namenode.kerberos.principal'='hadoop/_h...@realm.com'
   'hadoop.security.authentication'='kerberos',
   'hadoop.kerberos.principal'='doris_t...@realm.com',
   'hadoop.kerberos.keytab'='/path/to/doris_test.keytab'
   );
   ```
   
   If you want  to `select into outfile` to HDFS that kerberos authentication 
enable, you can refer to the following SQL statement:
   
   ```sql
   select * from test into outfile "hdfs://tmp/outfile1" 
   format as csv
   properties
   (
   "fs.defaultFS"="hdfs://hacluster/",
   'dfs.nameservices'='hacluster',
   'dfs.ha.namenodes.hacluster'='n1,n2',
   'dfs.namenode.rpc-address.hacluster.n1'='192.168.0.1:8020',
   'dfs.namenode.rpc-address.hacluster.n2'='192.168.0.2:8020',
   
'dfs.client.failover.proxy.provider.hacluster'='org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider',
   'dfs.namenode.kerberos.principal'='hadoop/_h...@realm.com'
   'hadoop.security.authentication'='kerberos',
   'hadoop.kerberos.principal'='doris_t...@realm.com',
   'hadoop.kerberos.keytab'='/path/to/doris_test.keytab'
   );
   ```
   ## Checklist(Required)
   
   1. Does it affect the original behavior: (Yes)
   2. Has unit tests been added: (Yes)
   3. Has document been added or modified: (Yes)
   4. Does it need to update dependencies: (Yes)
   5. Are there any changes that cannot be rolled back: (No)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   


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