[DRILL-2141] Data type error in group by and order by for JSON

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 1.0.0
• Component/s: Execution - Data Types
• Assignee: Daniel Barclay
• Reporter: Andries Engelbrecht
• Created: 02/Feb/15 19:16
• Updated: 01/May/15 00:36
• Resolved: 01/May/15 00:36

Description

When doing group by and oder by on complex nested JSON getting Data type errors.

Query:
select t.retweeted_status.`user`.name as name, count(t.retweeted_status.id) as rt_count from `./nfl` t where t.retweeted_status.`user`.name is not null group by t.retweeted_status.`user`.name order by count(t.retweeted_status.id) desc limit 10;

Screen output:
Query failed: Query failed: Failure while running fragment., Failure while reading vector. Expected vector class of org.apache.drill.exec.vector.NullableIntVector but was holding vector class org.apache.drill.exec.vector.NullableVarCharVector. [ c6ea670f-5fa0-491c-acfb-5ccd128ec324 on drilldemo:31010 ]
[ c6ea670f-5fa0-491c-acfb-5ccd128ec324 on drilldemo:31010 ]

java.lang.RuntimeException: java.sql.SQLException: Failure while executing query.
at sqlline.SqlLine$IncrementalRows.hasNext(SqlLine.java:2514)
at sqlline.SqlLine$TableOutputFormat.print(SqlLine.java:2148)
at sqlline.SqlLine.print(SqlLine.java:1809)
at sqlline.SqlLine$Commands.execute(SqlLine.java:3766)
at sqlline.SqlLine$Commands.sql(SqlLine.java:3663)
at sqlline.SqlLine.dispatch(SqlLine.java:889)
at sqlline.SqlLine.begin(SqlLine.java:763)
at sqlline.SqlLine.start(SqlLine.java:498)
at sqlline.SqlLine.main(SqlLine.java:460)

Drill log attached