[DRILL-3565] Add support for Avro UNION type

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.0, 1.2.0
• Fix Version/s: 1.2.0
• Component/s: Storage - Other
• Assignee: Unassigned
• Reporter: Abhishek Girish
• Created: 27/Jul/15 19:09
• Updated: 14/May/17 00:46
• Resolved: 01/Oct/15 23:30

Description

Running a simple select * from an avro file fails.

> select count(*) from `divolte.avro`;
Error: SYSTEM ERROR: UnsupportedOperationException: Unimplemented type: UNION

Fragment 0:0

[Error Id: c7c1ed87-cd85-4146-844d-4addc227128b on abhi1:31010] (state=,code=0)

Plan:

00-00    Screen
00-01      Project(*=[$0])
00-02        Scan(groupscan=[EasyGroupScan [selectionRoot=maprfs:/tmp/divolte.avro, numFiles=1, columns=[`*`], files=[maprfs:///tmp/divolte.avro]]])
 

Log & data file attached.

Issue Links

• is related to: DRILL-3458 Avro file format's support for map and nullable union data types.