[DRILL-1650] Add support for repeated_count multi-level array data type?

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.6.0
• Fix Version/s: Future
• Component/s: Functions - Drill
• Assignee: Unassigned
• Reporter: Hao Zhu
• Created: 06/Nov/14 23:48
• Updated: 01/Oct/15 16:37

Description

1. "n1.json" is :

{"test":[1,2,3,4,4,5]}

Then the function works fine:

0: jdbc:drill:> select repeated_count(t.test) from `n1.json` as t;
+------------+
|   EXPR$0   |
+------------+
| 6          |
+------------+

2. However if the json has 2-level or more arrays:

{"test":[[1,2,3,4,5,6]]}

The function failed:

0: jdbc:drill:> select t.test[0][0],t.test[0][1] from `n4.json` as t;
+------------+------------+
|   EXPR$0   |   EXPR$1   |
+------------+------------+
| 1          | 2          |
+------------+------------+
1 row selected (0.126 seconds)
0: jdbc:drill:> select repeated_count(t.test[0]) from `n4.json` as t;
Query failed: Screen received stop request sent. Line 54, Column 22: "end" is neither a method, a field, nor a member class of "org.apache.drill.exec.vector.complex.reader.FieldReader" [11c5ff5b-c00f-4754-9bda-c3bec9471f72]

Error: exception while executing query: Failure while trying to get next result batch. (state=,code=0)

Am I missing something or is this a bug?

Issue Links

• is duplicated by: DRILL-2385 count on complex objects failed with missing function implementation