[jira] [Created] (DRILL-2744) Provide error message when trying to query MapR-DB or HBase tables with insufficient priviliges

["Andries Engelbrecht (JIRA)" <ji...@apache.org>]

Andries Engelbrecht created DRILL-2744:
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             Summary: Provide error message when trying to query MapR-DB or HBase tables with insufficient priviliges
                 Key: DRILL-2744
                 URL: https://issues.apache.org/jira/browse/DRILL-2744
             Project: Apache Drill
          Issue Type: Improvement
          Components: Storage - HBase
    Affects Versions: 0.8.0
            Reporter: Andries Engelbrecht
            Assignee: Aditya Kishore


When creating MapR-DB tables with different privileges Drill will return no results for tables with insufficient privileges. Propose an error is returned so the user is aware of the issue, instead of simply no data being returned. 

This can be a serious issue with complex queries when joining data across multiple data sources.

Creating 2 tables - one with mapr user and the other as root.

lr--------. 1 mapr mapr 2 Apr  9 17:51 customers -> mapr::table::2057.45.1574734
lr--------. 1 root root 2 Apr 10 00:21 test -> mapr::table::2057.48.1574740


hbase(main):005:0> get "test", "r1"
COLUMN                            CELL
 col1:                            timestamp=1428625497000, value=a
 col2:                            timestamp=1428625506268, value=b
2 row(s) in 0.0380 seconds


0: jdbc:drill:zk=drilldemo:5181> show tables;
+--------------+------------+
| TABLE_SCHEMA | TABLE_NAME |
+--------------+------------+
| maprdb       | test       |
| maprdb       | customers  |
+--------------+------------+
2 rows selected (0.098 seconds)

querying test tables simply returns no results instead of an error.

0: jdbc:drill:zk=drilldemo:5181> select * from test;
+--+
|  |
+--+
+--+
No rows selected (0.059 seconds)

Customers does return data due to sufficient privileges.

0: jdbc:drill:zk=drilldemo:5181> select * from customers limit 1;
+------------+------------+------------+------------+
|  row_key   |  address   |  loyalty   |  personal  |
+------------+------------+------------+------------+
| [B@6e22c013 | {"state":"InZhIg=="} | {"agg_rev":"MTk3","membership":"InNpbHZlciI="} | {"age":"IjE1LTIwIg==","gender":"IkZFTUFMRSI=","name":"IkNvcnJpbmUgTWVjaGFtIg=="} |
+------------+------------+------------+------------+
1 row selected (0.236 seconds)



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