Error in reading a list type data in hive which was generated through pig

ArrayWritableGroupConverter in Parquet-Hive binding expects that any array field contains either 1 or 2 fields. However, the schema which PigSchemaConverter generates, doesn't honour this condition. It can be reproduced through following code

```
MessageType messageType = new PigSchemaConverter().convert(ThriftToPig.toSchema(Requestlist.class));
DataWritableGroupConverter converter = new DataWritableGroupConverter(messageType, messageType);
```

Requestlist is a thrift class
```
struct Request {
1: required string id,
2: i64 time,
3: required string source
}

struct Requestlist {
1: optional list requests
}
```

**Environment**: Parquet-Pig - 1.3.2
Hive - 0.13.1
Elephant-Bird - 4.4
**Reporter**: [Abhishek Agarwal](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=abhishek.agarwal) / @abhishekagarwal87

_{**Note**: *This issue was originally created as [PARQUET-53](https://issues.apache.org/jira/browse/PARQUET-53). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

Beginne mit ArrayWritableGroupConverter im Parquet-Hive binding und PigSchemaConverter und reproduziere anschließend das Problem mithilfe des Requestlist schema und des DataWritableGroupConverter snippet aus dem Bericht. Verfolge das generierte Listenschema im Vergleich zur Erwartung des Converters von einem oder zwei Feldern; als erledigt gilt die Aufgabe, wenn das generierte Schema ohne diesen Konvertierungsfehler gelesen werden kann.

Vom Indexierungsmodell aus dem Issue-Text verfasst.