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From "Ashutosh Chauhan (JIRA)" <>
Subject [jira] [Updated] (HIVE-19598) Add Acid V1 to V2 upgrade module
Date Thu, 31 May 2018 20:38:00 GMT


Ashutosh Chauhan updated HIVE-19598:
       Resolution: Fixed
    Fix Version/s: 4.0.0
           Status: Resolved  (was: Patch Available)

Pushed to master. Thanks, Eugene!
[~vgarg] Can we have this on branch-3 as well since its very useful for users to help them
migrate to Acid V2.

> Add Acid V1 to V2 upgrade module
> --------------------------------
>                 Key: HIVE-19598
>                 URL:
>             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-19598.02.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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