Add DATE mapping in ValidTypeMap of filter2

[asfimport]

When Hive use Parquet filter predicate, the Date type is converted to Integer. In ValidTypeMap, it map the class and Parquet type. It throw exception when checking the data type Date.

We should add the map to support Date.

Reporter: Dong Chen / @dongc
Assignee: Dong Chen / @dongc

Related issues:

• Parquet PPD support DATE (blocks)
• Parquet PPD support TIMESTAMP (blocks)
• Column with OriginalType INT_8 failed at filtering (duplicates)

PRs and other links:

• GitHub Pull Request #169

_{Note: This issue was originally created as PARQUET-247. Please see the migration documentation for further details.}

[asfimport]

Dong Chen / @dongc:
PR: https://github.com/apache/incubator-parquet-mr/pull/169

[asfimport]

Nándor Kollár / @nandorKollar:
Since PARQUET-201 was resolved by removing OriginalType from the type check, I don't think this Jira is an outstanding issue and blocker for Hive Parquet PPD any more, hence I resolve it. Feel free to reopen if I was wrong.