SERDE backed schema for parquet storage in Hive

As of now, for a hive table stored as parquet, the schema can only be specified in Hive MetaStore. For our use-case, it is desired that the schema be provided by Thrift SerDe rather than MetaStore. Using thrift IDL as a schema provider, allows us to maintain a consistent schema across executions engines other than Hive such as Pig and Native MR.

Additionally, for a large sparse schema, it is much easier to build thrift objects, and use parquet-thrift/elephant-bird to convert them into columns/tuples rather than constructing the whole big tuple itself.

**Reporter**: [Abhishek Agarwal](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=abhishek.agarwal) / @abhishekagarwal87
**Assignee**: [Ashish Singh](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=singhashish) / @SinghAsDev

_{**Note**: *This issue was originally created as [PARQUET-47](https://issues.apache.org/jira/browse/PARQUET-47). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

この issue にはファイル、テスト、エントリポイントが記載されていません。まず Hive MetaStore スキーマと Thrift SerDes がどのように扱われているかを追跡し、次に parquet-thrift と elephant-bird の統合を確認します。完了の条件は、Hive の parquet テーブルが Thrift IDL からスキーマを取得でき、Hive、Pig、Native MR 間で引き続き利用できることです。

索引モデルが issue の本文から書いたものです。