[
https://issues.apache.org/jira/browse/HIVE-14815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ferdinand Xu updated HIVE-14815:
--------------------------------
Attachment: HIVE-14815.patch
> Implement Parquet vectorization reader
> ---------------------------------------
>
> Key: HIVE-14815
> URL: https://issues.apache.org/jira/browse/HIVE-14815
> Project: Hive
> Issue Type: Sub-task
> Reporter: Ferdinand Xu
> Assignee: Ferdinand Xu
> Attachments: HIVE-14815.patch
>
>
> Parquet doesn't provide a vectorized reader which can be used by Hive
> directly. Also for Decimal Column batch, it consists of a batch of
> HiveDecimal which is a Hive type which is unknown for Parquet. To support
> Hive vectorization execution engine in Hive, we have to implement the
> vectorized Parquet reader in Hive side. To limit the performance impacts, we
> need to implement a page level vectorized reader.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
