hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sergey Shelukhin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-9660) store end offset of compressed data for RG in RowIndex in ORC
Date Thu, 12 Feb 2015 02:22:13 GMT
Sergey Shelukhin created HIVE-9660:
--------------------------------------

             Summary: 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


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)

Mime
View raw message