Csaba Ringhofer 76f9b75c8b IMPALA-10172: Support Hive metastore managed locations for databases ...

This change lets the user set the managed location path in new
databases, e.g.
CREATE DATABASE db MANAGEDLOCATION 'some url';

This property sets the location where the database's tables with
table property 'transactional'='true' will be placed.

The change also adds managedlocation to DESCRIBE DATABASE's output.
Example:
DESCRIBE DATABASE db;
+------------------+-----------------------------------------+---------+
| name             | location                                | comment |
+------------------+-----------------------------------------+---------+
| db               | hdfs://localhost:20500/test-warehouse/a |         |
| managedlocation: | hdfs://localhost:20500/test-warehouse/b |         |
+------------------+-----------------------------------------+---------+
DESCRIBE DATABASE EXTENDED db6;
+------------------+-----------------------------------------+---------+
| name             | location                                | comment |
+------------------+-----------------------------------------+---------+
| db               | hdfs://localhost:20500/test-warehouse/a |         |
| managedlocation: | hdfs://localhost:20500/test-warehouse/b |         |
| Owner:           |                                         |         |
|                  | csringhofer                             | USER    |
+------------------+-----------------------------------------+---------+

Note that Impala's output for DESCRIBE DATABASE (EXTENDED) is
different than Hive's, where a new column was added for each extra
piece of information, while Impala adds a new row to keep the 3 column
format. Changing to Hive's format would be preferable in my opinion,
but is a potentially breaking change.
See IMPALA-6686 for further discussion.

Testing:
- added FE and EE tests
- ran relevant tests

Change-Id: I925632a43ff224f762031e89981896722e453399
Reviewed-on: http://gerrit.cloudera.org:8080/16529
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2020-10-07 18:32:51 +00:00

6.4 KiB

Raw Blame History

View Raw