Github user rtreffer commented on the pull request:
https://github.com/apache/spark/pull/6796#issuecomment-113814084
The problematic line is
https://github.com/apache/spark/blob/v1.4.0/sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTableSupport.scala#L105
(calling ParquetTypesConverter.convertFromAttributes)
This causes the schema to be normalized, but that does not work for decimal.
```
message hive_schema {
optional int32 id;
optional fixed_len_byte_array(13) value (DECIMAL(30,0));
}
```
is replaced by
```
message root {
optional int32 id;
optional binary value (DECIMAL(30,0));
}
```
I removed that line and the loading of the data works.
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