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

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

    [ https://issues.apache.org/jira/browse/HAWQ-831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15335342#comment-15335342 ] 

Lili Ma commented on HAWQ-831:
------------------------------

If we re-implement some data types in HAWQ, the Hive generated parquet files for these data types can be directly registered into HAWQ.

> 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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)