How do I change permissions on a Hive table?

How do I change permissions on a Hive table?

Change default permission of hive database

1. From the command line in the Ambari server node, edit the file.
2. Modify the value for mode from 0777 to the desired permission, for example 0750.
3. Restart the Ambari server to propagate the change to all nodes in the cluster:

How do you grant permissions on the Hive?

Hive>use database; Hive>grant all on table table_name to role os_user_name with grant option; By this “os_user_name” only can able to access, other wont able to see the tables.

How do I check permissions on a Hive table?

When a user runs a Hive query or command, the privileges granted to the user and her “current roles” are checked. The current roles can be seen using the ” show current roles; ” command.

Can Hive access data outside of HDFS?

Hive External Table. External tables are stored outside the warehouse directory. They can access data stored in sources such as remote HDFS locations or Azure Storage Volumes. Whenever we drop the external table, then only the metadata associated with the table will get deleted, the table data remains untouched by Hive …

How do I change the owner of a hive database?

1 Answer. If your Hadoop cluster is Kerberos enabled then there is no way you can change the ownership with non-super user account. If this would have been possible then there is no use of Permissions.

How do I check hive database access?

DESCRIBE SCHEMA is added in Hive 0.15 (HIVE-8803). EXTENDED also shows the database properties. Files within a directory are order by filename by default. If you have configured the hive to an external metastore like mysql or derby , you can query the metastore table DBS to get the information .

How can you tell who owns a hive table?

Which of the following does Hive use for logging?

Hive uses log4j for logging.

Can Hive run without Hadoop?

5 Answers. To be precise, it means running Hive without HDFS from a hadoop cluster, it still need jars from hadoop-core in CLASSPATH so that hive server/cli/services can be started. btw, hive.

How do I recursively change permissions in HDFS?

Changing HDFS File Permissions You must be a super user or the owner of a file or directory to change its permissions. With the chgrp, chmod and chown commands you can specify the –R option to make recursive changes through the directory structure you specify.

How do I protect an important file in HDFS?

USING HDFS SNAPSHOTS TO PROTECT IMPORTANT ENTERPRISE DATASETS

1. Performant and Reliable: Snapshot creation is atomic and instantaneous, no matter the size or depth of the directory subtree.
2. Scalable: Snapshots do not create extra copies of blocks on the file system.