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https://issues.apache.org/jira/browse/DRILL-4958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Khurram Faraaz updated DRILL-4958:
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Summary: Union All query fails stating that parquet files are schema less
(was: Union All qiery fails stating that parquet files are schema less)
> Union All query fails stating that parquet files are schema less
> ----------------------------------------------------------------
>
> Key: DRILL-4958
> URL: https://issues.apache.org/jira/browse/DRILL-4958
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Affects Versions: 1.9.0
> Reporter: Khurram Faraaz
>
> 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
> {noformat}
> 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)
> {noformat}
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