[DRILL-984] DESCRIBE VIEW works inconsistently

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Future
• Assignee: Unassigned
• Reporter: George Chow
• Created: 14/Jun/14 00:30
• Updated: 04/Jan/15 21:28
• Resolved: 04/Jan/15 21:28

Description

I created a view and can work with it in some circumstances:

0: jdbc:drill:local=localhost:31010> select * from INFORMATION_SCHEMA.`TABLES` where TABLE_SCHEMA='dfs.tmp';
+---------------+--------------+------------+------------+
| TABLE_CATALOG | TABLE_SCHEMA | TABLE_NAME | TABLE_TYPE |
+---------------+--------------+------------+------------+
| DRILL         | dfs.tmp      | georgecview | VIEW       |
+---------------+--------------+------------+------------+
1 row selected (1.551 seconds)
0: jdbc:drill:local=localhost:31010> use dfs.tmp;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | Default schema changed to 'dfs.tmp' |
+------------+------------+
1 row selected (0.437 seconds)
0: jdbc:drill:local=localhost:31010> describe georgecview;
+-------------+------------+-------------+
| COLUMN_NAME | DATA_TYPE  | IS_NULLABLE |
+-------------+------------+-------------+
| *           | ANY        | NO          |
+-------------+------------+-------------+
1 row selected (1.684 seconds)

However, working with it in a more general setting (fully-qualified with its schema) doesn't:

0: jdbc:drill:local=localhost:31010> describe `dfs.tmp`.`./georgecview`;
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "3b52da4b-8b0b-4750-94ae-e200c9485d1a"
endpoint {
  address: "192.168.39.43"
  user_port: 31010
  control_port: 31011
  data_port: 31012
}
error_type: 0
message: "Failure while parsing sql. < RelConversionException:[ Error while rewriting DESCRIBE query: Table dfs.tmp../georgecview is not valid ] < RelConversionException:[ Table dfs.tmp../georgecview is not valid ]"
]
Error: exception while executing query (state=,code=0)
0: jdbc:drill:local=localhost:31010> describe `dfs.tmp`.`georgecview.view.drill`;
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while running query.[error_id: "99c57bf2-bbb9-4bdd-9321-03c59aff9c27"
endpoint {
  address: "192.168.39.43"
  user_port: 31010
  control_port: 31011
  data_port: 31012
}
error_type: 0
message: "Failure while parsing sql. < RelConversionException:[ Error while rewriting DESCRIBE query: Table dfs.tmp.georgecview.view.drill is not valid ] < RelConversionException:[ Table dfs.tmp.georgecview.view.drill is not valid ]"
]
Error: exception while executing query (state=,code=0)

The problem seems to be the leading './':

0: jdbc:drill:local=localhost:31010> describe `dfs.tmp`.`georgecview`;
+-------------+------------+-------------+
| COLUMN_NAME | DATA_TYPE  | IS_NULLABLE |
+-------------+------------+-------------+
| *           | ANY        | NO          |
+-------------+------------+-------------+
1 row selected (1.957 seconds)