[
https://issues.apache.org/jira/browse/HIVE-9660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15198344#comment-15198344
]
Sergey Shelukhin edited comment on HIVE-9660 at 3/16/16 10:43 PM:
------------------------------------------------------------------
This patch writes ORC files that look correct, but there are issues during
reading. A lot of debugging will be needed to determine what's going on...
Attaching here for now.
Test changes are temporary
was (Author: sershe):
This patch writes ORC files that look correct, but there are issues during
reading. A lot of debugging will be needed to determine what's going on...
Attaching here for now.
> store end offset of compressed data for RG in RowIndex in ORC
> -------------------------------------------------------------
>
> Key: HIVE-9660
> URL: https://issues.apache.org/jira/browse/HIVE-9660
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-9660.WIP2.patch
>
>
> Right now the end offset is estimated, which in some cases results in tons of
> extra data being read.
> We can add a separate array to RowIndex (positions_v2?) that stores number of
> compressed buffers for each RG, or end offset, or something, to remove this
> estimation magic
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
