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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18748) Rename table impacts the ACID behaviour as table names are not updated in meta-tables.
Date Tue, 15 May 2018 01:08:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475138#comment-16475138
] 

Eugene Koifman commented on HIVE-18748:
---------------------------------------

[~sankarh], addressed comments.  could you look again please

> Rename table impacts the ACID behaviour as table names are not updated in meta-tables.
> --------------------------------------------------------------------------------------
>
>                 Key: HIVE-18748
>                 URL: https://issues.apache.org/jira/browse/HIVE-18748
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HiveServer2, Transactions
>    Affects Versions: 3.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Eugene Koifman
>            Priority: Critical
>              Labels: ACID, DDL
>         Attachments: HIVE-18748.02.patch, HIVE-18748.03.patch
>
>
> ACID implementation uses metatables such as TXN_COMPONENTS, COMPLETED_TXN_COMPONENTS,
COMPACTION_QUEUE, COMPLETED_COMPCTION_QUEUE etc to manage ACID operations.
> Per table write ID implementation (HIVE-18192) introduces couple of metatables such as
NEXT_WRITE_ID and TXN_TO_WRITE_ID to manage write ids allocated per table.
> Now, when we rename any tables, it is necessary to update the corresponding table names
in these metatables as well. Otherwise, ACID table operations won't work properly.
> Since, this change is significant and have other side-effects, we propose to disable
rename tables on ACID tables until a fix is figured out.



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