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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HIVE-9660) store end offset of compressed data for RG in RowIndex in ORC
Date Tue, 16 Jun 2020 16:58:02 GMT

     [ https://issues.apache.org/jira/browse/HIVE-9660?focusedWorklogId=446741&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-446741
]

ASF GitHub Bot logged work on HIVE-9660:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 16/Jun/20 16:57
            Start Date: 16/Jun/20 16:57
    Worklog Time Spent: 10m 
      Work Description: github-actions[bot] commented on pull request #77:
URL: https://github.com/apache/hive/pull/77#issuecomment-644888481


   This pull request has been automatically marked as stale because it has not had recent
activity. It will be closed if no further activity occurs.
   Feel free to reach out on the dev@hive.apache.org list if the patch is in need of reviews.


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 446741)
    Remaining Estimate: 0h
            Time Spent: 10m

> 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
>            Priority: Major
>         Attachments: HIVE-9660.01.patch, HIVE-9660.02.patch, HIVE-9660.03.patch, HIVE-9660.04.patch,
HIVE-9660.05.patch, HIVE-9660.06.patch, HIVE-9660.07.patch, HIVE-9660.07.patch, HIVE-9660.08.patch,
HIVE-9660.09.patch, HIVE-9660.10.patch, HIVE-9660.10.patch, HIVE-9660.11.patch, HIVE-9660.patch,
HIVE-9660.patch, HIVE-9660.patch, owen-hive-9660.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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



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