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https://issues.apache.org/jira/browse/HIVE-14909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622212#comment-15622212
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Chaoyu Tang commented on HIVE-14909:
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Thanks, [~leftylev]
> Preserve the location of table created with the location clause in table
> rename
> -------------------------------------------------------------------------------
>
> Key: HIVE-14909
> URL: https://issues.apache.org/jira/browse/HIVE-14909
> Project: Hive
> Issue Type: Improvement
> Components: Hive
> Affects Versions: 1.1.0
> Reporter: Adriano
> Assignee: Chaoyu Tang
> Fix For: 2.2.0
>
> Attachments: HIVE-14909.1.patch, HIVE-14909.1.patch,
> HIVE-14909.2.patch, HIVE-14909.3.patch, HIVE-14909.patch, HIVE-14909.patch
>
>
> Alter Table operation for db_enc.rename_test failed to move data due to:
> '/hdfs/encrypted_path/db_enc/rename_test can't be moved from an encryption
> zone.'
> When Hive renames a managed table, it always creates the new renamed table
> directory under its database directory in order to keep a db/table hierarchy.
> In this case, the renamed table directory is created under "default db"
> directory "hive/warehouse/". When Hive renames a managed table, it always
> creates the new renamed table directory under its database directory in order
> to keep a db/table hierarchy. In this case, the renamed table directory is
> created under "default' db directory typically set as /hive/warehouse/ .
> This error doesn't appear if first create a database which points to a
> directory outside /hive/warehouse/, say '/hdfs/encrypted_path', you won't
> have this problem. For example,
> create database db_enc location '/hdfs/encrypted_path/db_enc;
> use db_enc;
> create table rename_test (...) location
> '/hdfs/encrypted_path/db_enc/rename_test';
> alter table rename_test rename to test_rename;
> The renamed test_rename directory is created under
> /hdfs/encrypted_path/db_enc.
> Considering that the encryption of a filesystem is part of the evolution
> hardening of a system (where the system and the data contained can already
> exists) and a db can be already created without location set (because it is
> not strictly required)and the default db is outside the same encryption zone
> (or in a no-encryption zone) the alter table rename operation will fail.
> Improvement:
> Preserve the "parent location" of the table when an "alter table <table>
> rename to <newname>" is submitted (the case when the db location is not
> specified and the Hive defult db is outside the same encrypted zone).
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