[DRILL-4958] Union All query fails stating that parquet files are schema less

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.9.0
• Component/s: Execution - Flow
• Assignee: Unassigned
• Reporter: Khurram Faraaz
• Created: 24/Oct/16 13:08
• Updated: 24/Oct/16 13:11

Description

UNION ALL query over parquet files fails and reports that the Union-All was over schema-less tables.
Parquet files are not with out a schema, they do have metadata. We need to fix this. Postgres returns results for the same query on same data.

Drill 1.9.0
git commit ID : a29f1e29

0: jdbc:drill:schema=dfs.tmp> select * from `t_alltype.parquet` t1 union all select * from `t_alltype.parquet` t2;
Error: UNSUPPORTED_OPERATION ERROR: Union-All over schema-less tables must specify the columns explicitly
See Apache Drill JIRA: DRILL-2414


[Error Id: b6069bdc-8697-4578-a799-802ff3e80f00 on centos-01.qa.lab:31010] (state=,code=0)