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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19598) Add Acid V1 to V2 upgrade module
Date Fri, 01 Jun 2018 04:25:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16497541#comment-16497541
] 

Eugene Koifman commented on HIVE-19598:
---------------------------------------

[~vgarg], HIVE-19598.01-branch-3.patch is attached and sanity checked

> Add Acid V1 to V2 upgrade module
> --------------------------------
>
>                 Key: HIVE-19598
>                 URL: https://issues.apache.org/jira/browse/HIVE-19598
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Transactions
>    Affects Versions: 3.0.0
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>            Priority: Critical
>             Fix For: 4.0.0
>
>         Attachments: HIVE-19598.01-branch-3.patch, HIVE-19598.02.patch, HIVE-19598.05.patch,
HIVE-19598.06.patch
>
>
> The on-disk layout for full acid (transactional) tables has changed 3.0.
> Any transactional table that has any update/delete events in any deltas that have not
been Major compacted, must go through a Major compaction before upgrading to 3.0.  No more
update/delete/merge should be run after/during major compaction.
> Not doing so will result in data corruption/loss.
>  
> Need to create a utility tool to help with this process.  HIVE-19233 started this but
it needs more work.



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