stuartcarnie opened a new issue, #2982:
URL: https://github.com/apache/arrow-datafusion/issues/2982
**Describe the bug**
Calling `create external table` for a set of `parquet` files fails with an
error:
```
ArrowError(SchemaError("Fail to merge schema due to conflicting metadata."))
```
Despite the arrow schema matching across all files.
**To Reproduce**
Create two parquet files with the same structure (columns and data types),
but with differing values for a custom key and store this in the metadata.
**Expected behavior**
The following should succeed as the file data schemas match:
```
create external table docker_container_cpu stored as parquet location
'mydata/1/13/1/';
```
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