[jira] [Created] (SPARK-8138) Error message for discovered conflicting partition columns is not intuitive

["Cheng Lian (JIRA)" <ji...@apache.org>]

Cheng Lian created SPARK-8138:
---------------------------------

             Summary: Error message for discovered conflicting partition columns is not intuitive
                 Key: SPARK-8138
                 URL: https://issues.apache.org/jira/browse/SPARK-8138
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 1.3.1, 1.3.0, 1.4.0
            Reporter: Cheng Lian
            Assignee: Cheng Lian
            Priority: Minor


For data stored as a Hive-style partitioned table, data files should only live in leaf partition directories.

For example, the following directory layout is illegal:
{noformat}
.
├── _SUCCESS
├── b=0
│   ├── c=0
│   │   └── part-r-00004.gz.parquet
│   └── part-r-00004.gz.parquet
└── b=1
    ├── c=1
    │   └── part-r-00008.gz.parquet
    └── part-r-00008.gz.parquet
{noformat}
For now, we give an unintuitive error message like this:
{noformat}
Conflicting partition column names detected:
 ArrayBuffer(b, c)
ArrayBuffer(b)
{noformat}
This should be improved.



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