[jira] [Created] (HAWQ-831) Re-implementation for some data types of Parquet in HAWQ

["Lili Ma (JIRA)" <ji...@apache.org>]

Lili Ma created HAWQ-831:
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             Summary: Re-implementation for some data types of Parquet in HAWQ
                 Key: HAWQ-831
                 URL: https://issues.apache.org/jira/browse/HAWQ-831
             Project: Apache HAWQ
          Issue Type: Task
          Components: Storage
            Reporter: Lili Ma
            Assignee: Lei Chang


Re-implement some HAWQ data type mapping to Parquet, so that HAWQ can be compatible with Hive.
1. Currently HAWQ converts data type decimal to byte array, we can modify it to fixed length byte array, so that HAWQ can be compatible with Hive.
2. HAWQ itself can convert the data type char to int32 instead of byte array, so that the space for char storage can be saved.
3. To be compatible with Hive, HAWQ can change its type mapping for decimal to int96, but this need discussion.



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