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Posted to issues@hive.apache.org by "Sankar Hariappan (JIRA)" <ji...@apache.org> on 2018/05/15 02:32:00 UTC
[jira] [Comment Edited] (HIVE-18748) Rename table impacts the ACID
behaviour as table names are not updated in meta-tables.
[ https://issues.apache.org/jira/browse/HIVE-18748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475206#comment-16475206 ]
Sankar Hariappan edited comment on HIVE-18748 at 5/15/18 2:31 AM:
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[~ekoifman],
Posted few more comments. Please have a look.
was (Author: sankarh):
[~ekoifman], few comments comments. Please have a look.
> 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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