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From "Kadir OZDEMIR (Jira)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-5736) Mutable global index rebuilds are incorrect after PHOENIX-5494
Date Tue, 18 Feb 2020 22:44:00 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-5736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kadir OZDEMIR updated PHOENIX-5736:
-----------------------------------
    Attachment: skipScanTest.txt

> Mutable global index rebuilds are incorrect after PHOENIX-5494
> --------------------------------------------------------------
>
>                 Key: PHOENIX-5736
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5736
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.15.0, 4.14.3
>            Reporter: Kadir OZDEMIR
>            Priority: Critical
>         Attachments: skipScanTest.txt
>
>
> PHOENIX-5494 uses skip scans to improve write performance for tables with indexes. Before
this jira, a separate scanner was opened for each data table mutation to read all versions
and delete markers of for the row to be mutated. With this jira, a single scanner is opened
using a raw scan with a skip scan filter to read all versions and delete markers of the all
rows in a batch. Reading existing data table rows is required to generate index updates.
> However, I have discovered that a raw scan with a skip scan filter does not return all
raw versions. This means that after PHOENIX-5494 index rebuilds for global indexes will not
be correct. 
>  



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